diff --git a/src/lib/index.js b/src/lib/index.js
index 17ff52c33db..6039e420d2b 100644
--- a/src/lib/index.js
+++ b/src/lib/index.js
@@ -1182,31 +1182,48 @@ lib.isHidden = function(gd) {
     return !display || display === 'none';
 };
 
-lib.getTextTransform = function(opts) {
-    var textX = opts.textX;
-    var textY = opts.textY;
-    var targetX = opts.targetX;
-    var targetY = opts.targetY;
-    var scale = opts.scale;
-    var rotate = opts.rotate;
-
-    var transformScale;
-    var transformRotate;
-    var transformTranslate;
-
-    if(scale < 1) transformScale = 'scale(' + scale + ') ';
-    else {
-        scale = 1;
-        transformScale = '';
-    }
-
-    transformRotate = (rotate) ?
-        'rotate(' + rotate + ' ' + textX + ' ' + textY + ') ' : '';
-
-    // Note that scaling also affects the center of the text box
-    var translateX = (targetX - scale * textX);
-    var translateY = (targetY - scale * textY);
-    transformTranslate = 'translate(' + translateX + ' ' + translateY + ')';
+/** Return transform text for bar bar-like rectangles and pie-like slices
+ *  @param {object} transform
+ *  - targetX: desired position on the x-axis
+ *  - targetY: desired position on the y-axis
+ *  - textX: width of text
+ *  - textY: height of text
+ *  - scale: (optional) scale applied after translate
+ *  - rotate: (optional) rotation applied after scale
+ *  - noCenter: when defined no extra arguments needed in rotation
+ */
+lib.getTextTransform = function(transform) {
+    var noCenter = transform.noCenter;
+    var textX = transform.textX;
+    var textY = transform.textY;
+    var targetX = transform.targetX;
+    var targetY = transform.targetY;
+    var rotate = transform.rotate;
+    var scale = transform.scale;
+    if(!scale) scale = 0;
+    else if(scale > 1) scale = 1;
+
+    return (
+        'translate(' +
+            (targetX - scale * textX) + ',' +
+            (targetY - scale * textY) +
+        ')' +
+        (scale < 1 ?
+            'scale(' + scale + ')' : ''
+        ) +
+        (rotate ?
+            'rotate(' + rotate +
+                (noCenter ? '' : ' ' + textX + ' ' + textY) +
+            ')' : ''
+        )
+    );
+};
 
-    return transformTranslate + transformScale + transformRotate;
+lib.ensureUniformFontSize = function(gd, baseFont) {
+    var out = lib.extendFlat({}, baseFont);
+    out.size = Math.max(
+        baseFont.size,
+        gd._fullLayout.uniformtext.minsize || 0
+    );
+    return out;
 };
diff --git a/src/plots/layout_attributes.js b/src/plots/layout_attributes.js
index e3fecbc40c8..d96cec68298 100644
--- a/src/plots/layout_attributes.js
+++ b/src/plots/layout_attributes.js
@@ -140,6 +140,36 @@ module.exports = {
         }),
         editType: 'layoutstyle'
     },
+    uniformtext: {
+        mode: {
+            valType: 'enumerated',
+            values: [false, 'hide', 'show'],
+            dflt: false,
+            role: 'info',
+            editType: 'plot',
+            description: [
+                'Determines how the font size for various text',
+                'elements are uniformed between each trace type.',
+                'If the computed text sizes were smaller than',
+                'the minimum size defined by `uniformtext.minsize`',
+                'using *hide* option hides the text; and',
+                'using *show* option shows the text without further downscaling.',
+                'Please note that if the size defined by `minsize` is greater than',
+                'the font size defined by trace, then the `minsize` is used.'
+            ].join(' ')
+        },
+        minsize: {
+            valType: 'number',
+            min: 0,
+            dflt: 0,
+            role: 'info',
+            editType: 'plot',
+            description: [
+                'Sets the minimum text size between traces of the same type.'
+            ].join(' ')
+        },
+        editType: 'plot'
+    },
     autosize: {
         valType: 'boolean',
         role: 'info',
diff --git a/src/plots/plots.js b/src/plots/plots.js
index 136d9779cff..3d94c561d1f 100644
--- a/src/plots/plots.js
+++ b/src/plots/plots.js
@@ -1472,6 +1472,11 @@ plots.supplyLayoutGlobalDefaults = function(layoutIn, layoutOut, formatObj) {
     coerce('title.pad.b');
     coerce('title.pad.l');
 
+    var uniformtextMode = coerce('uniformtext.mode');
+    if(uniformtextMode) {
+        coerce('uniformtext.minsize');
+    }
+
     // Make sure that autosize is defaulted to *true*
     // on layouts with no set width and height for backward compatibly,
     // in particular https://plot.ly/javascript/responsive-fluid-layout/
diff --git a/src/traces/bar/plot.js b/src/traces/bar/plot.js
index d67a5abb677..e7b5e108cb2 100644
--- a/src/traces/bar/plot.js
+++ b/src/traces/bar/plot.js
@@ -237,14 +237,14 @@ function plot(gd, plotinfo, cdModule, traceLayer, opts, makeOnCompleteCallback)
     Registry.getComponentMethod('errorbars', 'plot')(gd, bartraces, plotinfo, opts);
 }
 
-function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, makeOnCompleteCallback) {
+function appendBarText(gd, plotinfo, bar, cd, i, x0, x1, y0, y1, opts, makeOnCompleteCallback) {
     var xa = plotinfo.xaxis;
     var ya = plotinfo.yaxis;
 
     var fullLayout = gd._fullLayout;
     var textPosition;
 
-    function appendTextNode(bar, text, textFont) {
+    function appendTextNode(bar, text, font) {
         var textSelection = Lib.ensureSingle(bar, 'text')
             .text(text)
             .attr({
@@ -254,17 +254,17 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
                 // tex and regular text together
                 'data-notex': 1
             })
-            .call(Drawing.font, textFont)
+            .call(Drawing.font, font)
             .call(svgTextUtils.convertToTspans, gd);
 
         return textSelection;
     }
 
     // get trace attributes
-    var trace = calcTrace[0].trace;
+    var trace = cd[0].trace;
     var isHorizontal = (trace.orientation === 'h');
 
-    var text = getText(fullLayout, calcTrace, i, xa, ya);
+    var text = getText(fullLayout, cd, i, xa, ya);
     textPosition = getTextPosition(trace, i);
 
     // compute text position
@@ -272,7 +272,7 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
         opts.mode === 'stack' ||
         opts.mode === 'relative';
 
-    var calcBar = calcTrace[i];
+    var calcBar = cd[i];
     var isOutmostBar = !inStackOrRelativeMode || calcBar._outmost;
 
     if(!text ||
@@ -285,7 +285,7 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
     }
 
     var layoutFont = fullLayout.font;
-    var barColor = style.getBarColor(calcTrace[i], trace);
+    var barColor = style.getBarColor(cd[i], trace);
     var insideTextFont = style.getInsideTextFont(trace, i, layoutFont, barColor);
     var outsideTextFont = style.getOutsideTextFont(trace, i, layoutFont);
 
@@ -318,6 +318,7 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
     var textBB;
     var textWidth;
     var textHeight;
+    var font;
 
     if(textPosition === 'outside') {
         if(!isOutmostBar && !calcBar.hasB) textPosition = 'inside';
@@ -327,7 +328,10 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
         if(isOutmostBar) {
             // draw text using insideTextFont and check if it fits inside bar
             textPosition = 'inside';
-            textSelection = appendTextNode(bar, text, insideTextFont);
+
+            font = Lib.ensureUniformFontSize(gd, insideTextFont);
+
+            textSelection = appendTextNode(bar, text, font);
 
             textBB = Drawing.bBox(textSelection.node()),
             textWidth = textBB.width,
@@ -357,9 +361,9 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
     }
 
     if(!textSelection) {
-        textSelection = appendTextNode(bar, text,
-                (textPosition === 'outside') ?
-                outsideTextFont : insideTextFont);
+        font = Lib.ensureUniformFontSize(gd, (textPosition === 'outside') ? outsideTextFont : insideTextFont);
+
+        textSelection = appendTextNode(bar, text, font);
 
         var currentTransform = textSelection.attr('transform');
         textSelection.attr('transform', '');
@@ -374,6 +378,8 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
         }
     }
 
+    var angle = trace.textangle;
+
     // compute text transform
     var transform, constrained;
     if(textPosition === 'outside') {
@@ -381,25 +387,52 @@ function appendBarText(gd, plotinfo, bar, calcTrace, i, x0, x1, y0, y1, opts, ma
             trace.constraintext === 'both' ||
             trace.constraintext === 'outside';
 
-        transform = Lib.getTextTransform(toMoveOutsideBar(x0, x1, y0, y1, textBB, {
+        transform = toMoveOutsideBar(x0, x1, y0, y1, textBB, {
             isHorizontal: isHorizontal,
             constrained: constrained,
-            angle: trace.textangle
-        }));
+            angle: angle
+        });
     } else {
         constrained =
             trace.constraintext === 'both' ||
             trace.constraintext === 'inside';
 
-        transform = Lib.getTextTransform(toMoveInsideBar(x0, x1, y0, y1, textBB, {
+        transform = toMoveInsideBar(x0, x1, y0, y1, textBB, {
             isHorizontal: isHorizontal,
             constrained: constrained,
-            angle: trace.textangle,
+            angle: angle,
             anchor: trace.insidetextanchor
-        }));
+        });
     }
 
-    transition(textSelection, opts, makeOnCompleteCallback).attr('transform', transform);
+    transform.fontSize = font.size;
+    recordMinTextSize(trace.type, transform, fullLayout);
+    calcBar.transform = transform;
+
+    transition(textSelection, opts, makeOnCompleteCallback)
+        .attr('transform', Lib.getTextTransform(transform));
+}
+
+function recordMinTextSize(
+    traceType, // in
+    transform, // inout
+    fullLayout // inout
+) {
+    if(fullLayout.uniformtext.mode) {
+        var minKey = '_' + traceType + 'Text_minsize';
+        var minSize = fullLayout.uniformtext.minsize;
+        var size = transform.scale * transform.fontSize;
+
+        transform.hide = size < minSize;
+
+        fullLayout[minKey] = fullLayout[minKey] || Infinity;
+        if(!transform.hide) {
+            fullLayout[minKey] = Math.min(
+                fullLayout[minKey],
+                Math.max(size, minSize)
+            );
+        }
+    }
 }
 
 function getRotateFromAngle(angle) {
@@ -549,15 +582,15 @@ function toMoveOutsideBar(x0, x1, y0, y1, textBB, opts) {
     };
 }
 
-function getText(fullLayout, calcTrace, index, xa, ya) {
-    var trace = calcTrace[0].trace;
+function getText(fullLayout, cd, index, xa, ya) {
+    var trace = cd[0].trace;
     var texttemplate = trace.texttemplate;
 
     var value;
     if(texttemplate) {
-        value = calcTexttemplate(fullLayout, calcTrace, index, xa, ya);
+        value = calcTexttemplate(fullLayout, cd, index, xa, ya);
     } else if(trace.textinfo) {
-        value = calcTextinfo(calcTrace, index, xa, ya);
+        value = calcTextinfo(cd, index, xa, ya);
     } else {
         value = helpers.getValue(trace.text, index);
     }
@@ -570,8 +603,8 @@ function getTextPosition(trace, index) {
     return helpers.coerceEnumerated(attributeTextPosition, value);
 }
 
-function calcTexttemplate(fullLayout, calcTrace, index, xa, ya) {
-    var trace = calcTrace[0].trace;
+function calcTexttemplate(fullLayout, cd, index, xa, ya) {
+    var trace = cd[0].trace;
     var texttemplate = Lib.castOption(trace, index, 'texttemplate');
     if(!texttemplate) return '';
     var isWaterfall = (trace.type === 'waterfall');
@@ -599,7 +632,7 @@ function calcTexttemplate(fullLayout, calcTrace, index, xa, ya) {
         return tickText(vAxis, +v, true).text;
     }
 
-    var cdi = calcTrace[index];
+    var cdi = cd[index];
     var obj = {};
 
     obj.label = cdi.p;
@@ -640,8 +673,8 @@ function calcTexttemplate(fullLayout, calcTrace, index, xa, ya) {
     return Lib.texttemplateString(texttemplate, obj, fullLayout._d3locale, pt, obj, trace._meta || {});
 }
 
-function calcTextinfo(calcTrace, index, xa, ya) {
-    var trace = calcTrace[0].trace;
+function calcTextinfo(cd, index, xa, ya) {
+    var trace = cd[0].trace;
     var isHorizontal = (trace.orientation === 'h');
     var isWaterfall = (trace.type === 'waterfall');
     var isFunnel = (trace.type === 'funnel');
@@ -657,7 +690,7 @@ function calcTextinfo(calcTrace, index, xa, ya) {
     }
 
     var textinfo = trace.textinfo;
-    var cdi = calcTrace[index];
+    var cdi = cd[index];
 
     var parts = textinfo.split('+');
     var text = [];
@@ -666,7 +699,7 @@ function calcTextinfo(calcTrace, index, xa, ya) {
     var hasFlag = function(flag) { return parts.indexOf(flag) !== -1; };
 
     if(hasFlag('label')) {
-        text.push(formatLabel(calcTrace[index].p));
+        text.push(formatLabel(cd[index].p));
     }
 
     if(hasFlag('text')) {
@@ -717,5 +750,5 @@ function calcTextinfo(calcTrace, index, xa, ya) {
 module.exports = {
     plot: plot,
     toMoveInsideBar: toMoveInsideBar,
-    toMoveOutsideBar: toMoveOutsideBar
+    recordMinTextSize: recordMinTextSize
 };
diff --git a/src/traces/bar/style.js b/src/traces/bar/style.js
index b781d301854..2b204b45e8e 100644
--- a/src/traces/bar/style.js
+++ b/src/traces/bar/style.js
@@ -20,8 +20,40 @@ var attributeInsideTextFont = attributes.insidetextfont;
 var attributeOutsideTextFont = attributes.outsidetextfont;
 var helpers = require('./helpers');
 
+function resizeText(gd, gTrace, traceType) {
+    var fullLayout = gd._fullLayout;
+    var minSize = fullLayout['_' + traceType + 'Text_minsize'];
+    if(minSize) {
+        var shouldHide = fullLayout.uniformtext.mode === 'hide';
+
+        var t;
+        switch(traceType) {
+            case 'funnelarea' :
+            case 'pie' :
+            case 'sunburst' :
+            case 'treemap' :
+                t = gTrace.selectAll('g.slice');
+                break;
+            default :
+                t = gTrace.selectAll('g.points > g.point');
+        }
+
+        t.each(function(d) {
+            var transform = d.transform;
+            if(transform) {
+                transform.scale = (shouldHide && transform.hide) ? 0 : minSize / transform.fontSize;
+
+                var el = d3.select(this).select('text');
+                el.attr('transform', Lib.getTextTransform(transform));
+            }
+        });
+    }
+}
+
 function style(gd) {
     var s = d3.select(gd).selectAll('g.barlayer').selectAll('g.trace');
+    resizeText(gd, s, 'bar');
+
     var barcount = s.size();
     var fullLayout = gd._fullLayout;
 
@@ -57,7 +89,8 @@ function stylePoints(sel, trace, gd) {
 function styleTextPoints(sel, trace, gd) {
     sel.selectAll('text').each(function(d) {
         var tx = d3.select(this);
-        var font = determineFont(tx, d, trace, gd);
+        var font = Lib.ensureUniformFontSize(gd, determineFont(tx, d, trace, gd));
+
         Drawing.font(tx, font);
     });
 }
@@ -84,7 +117,7 @@ function styleTextInSelectionMode(txs, trace, gd) {
         var font;
 
         if(d.selected) {
-            font = Lib.extendFlat({}, determineFont(tx, d, trace, gd));
+            font = Lib.ensureUniformFontSize(gd, determineFont(tx, d, trace, gd));
 
             var selectedFontColor = trace.selected.textfont && trace.selected.textfont.color;
             if(selectedFontColor) {
@@ -171,5 +204,6 @@ module.exports = {
     styleOnSelect: styleOnSelect,
     getInsideTextFont: getInsideTextFont,
     getOutsideTextFont: getOutsideTextFont,
-    getBarColor: getBarColor
+    getBarColor: getBarColor,
+    resizeText: resizeText
 };
diff --git a/src/traces/funnel/style.js b/src/traces/funnel/style.js
index e59c81fe864..edb48c5568b 100644
--- a/src/traces/funnel/style.js
+++ b/src/traces/funnel/style.js
@@ -13,11 +13,13 @@ var d3 = require('d3');
 var Drawing = require('../../components/drawing');
 var Color = require('../../components/color');
 var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;
-
-var styleTextPoints = require('../bar/style').styleTextPoints;
+var barStyle = require('../bar/style');
+var resizeText = barStyle.resizeText;
+var styleTextPoints = barStyle.styleTextPoints;
 
 function style(gd, cd, sel) {
     var s = sel ? sel : d3.select(gd).selectAll('g.funnellayer').selectAll('g.trace');
+    resizeText(gd, s, 'funnel');
 
     s.style('opacity', function(d) { return d[0].trace.opacity; });
 
diff --git a/src/traces/funnelarea/plot.js b/src/traces/funnelarea/plot.js
index 29ce263c1d1..6c0cb07567c 100644
--- a/src/traces/funnelarea/plot.js
+++ b/src/traces/funnelarea/plot.js
@@ -16,6 +16,7 @@ var svgTextUtils = require('../../lib/svg_text_utils');
 
 var barPlot = require('../bar/plot');
 var toMoveInsideBar = barPlot.toMoveInsideBar;
+var recordMinTextSize = barPlot.recordMinTextSize;
 
 var pieHelpers = require('../pie/helpers');
 var piePlot = require('../pie/plot');
@@ -26,6 +27,7 @@ var determineInsideTextFont = piePlot.determineInsideTextFont;
 var layoutAreas = piePlot.layoutAreas;
 var prerenderTitles = piePlot.prerenderTitles;
 var positionTitleOutside = piePlot.positionTitleOutside;
+var formatSliceLabel = piePlot.formatSliceLabel;
 
 module.exports = function plot(gd, cdModule) {
     var fullLayout = gd._fullLayout;
@@ -47,7 +49,7 @@ module.exports = function plot(gd, cdModule) {
                 .classed('slice', true);
             slices.exit().remove();
 
-            slices.each(function(pt) {
+            slices.each(function(pt, i) {
                 if(pt.hidden) {
                     d3.select(this).selectAll('path,g').remove();
                     return;
@@ -78,7 +80,7 @@ module.exports = function plot(gd, cdModule) {
                 slicePath.attr('d', shape);
 
                 // add text
-                piePlot.formatSliceLabel(gd, pt, cd0);
+                formatSliceLabel(gd, pt, cd0);
                 var textPosition = pieHelpers.castOption(trace.textposition, pt.pts);
                 var sliceTextGroup = sliceTop.selectAll('g.slicetext')
                     .data(pt.text && (textPosition !== 'none') ? [0] : []);
@@ -94,13 +96,15 @@ module.exports = function plot(gd, cdModule) {
                         s.attr('data-notex', 1);
                     });
 
+                    var font = Lib.ensureUniformFontSize(gd, determineInsideTextFont(trace, pt, fullLayout.font));
+
                     sliceText.text(pt.text)
                         .attr({
                             'class': 'slicetext',
                             transform: '',
                             'text-anchor': 'middle'
                         })
-                        .call(Drawing.font, determineInsideTextFont(trace, pt, gd._fullLayout.font))
+                        .call(Drawing.font, font)
                         .call(svgTextUtils.convertToTspans, gd);
 
                     // position the text relative to the slice
@@ -108,22 +112,24 @@ module.exports = function plot(gd, cdModule) {
                     var transform;
 
                     var x0, x1;
-                    var y0 = Math.min(pt.BL[1], pt.BR[1]);
-                    var y1 = Math.max(pt.TL[1], pt.TR[1]);
+                    var y0 = Math.min(pt.BL[1], pt.BR[1]) + cy;
+                    var y1 = Math.max(pt.TL[1], pt.TR[1]) + cy;
 
-                    x0 = Math.max(pt.TL[0], pt.BL[0]);
-                    x1 = Math.min(pt.TR[0], pt.BR[0]);
+                    x0 = Math.max(pt.TL[0], pt.BL[0]) + cx;
+                    x1 = Math.min(pt.TR[0], pt.BR[0]) + cx;
 
-                    transform = Lib.getTextTransform(toMoveInsideBar(x0, x1, y0, y1, textBB, {
+                    transform = toMoveInsideBar(x0, x1, y0, y1, textBB, {
                         isHorizontal: true,
                         constrained: true,
                         angle: 0,
                         anchor: 'middle'
-                    }));
+                    });
+
+                    transform.fontSize = font.size;
+                    recordMinTextSize(trace.type, transform, fullLayout);
+                    cd[i].transform = transform;
 
-                    sliceText.attr('transform',
-                        'translate(' + cx + ',' + cy + ')' + transform
-                    );
+                    sliceText.attr('transform', Lib.getTextTransform(transform));
                 });
             });
 
diff --git a/src/traces/funnelarea/style.js b/src/traces/funnelarea/style.js
index af5455a7613..a17265e1092 100644
--- a/src/traces/funnelarea/style.js
+++ b/src/traces/funnelarea/style.js
@@ -11,9 +11,13 @@
 var d3 = require('d3');
 
 var styleOne = require('../pie/style_one');
+var resizeText = require('../bar/style').resizeText;
 
 module.exports = function style(gd) {
-    gd._fullLayout._funnelarealayer.selectAll('.trace').each(function(cd) {
+    var s = gd._fullLayout._funnelarealayer.selectAll('.trace');
+    resizeText(gd, s, 'funnelarea');
+
+    s.each(function(cd) {
         var cd0 = cd[0];
         var trace = cd0.trace;
         var traceSelection = d3.select(this);
diff --git a/src/traces/pie/attributes.js b/src/traces/pie/attributes.js
index 32bd7980258..be8e0f9bd25 100644
--- a/src/traces/pie/attributes.js
+++ b/src/traces/pie/attributes.js
@@ -181,6 +181,21 @@ module.exports = {
     textfont: extendFlat({}, textFontAttrs, {
         description: 'Sets the font used for `textinfo`.'
     }),
+    insidetextorientation: {
+        valType: 'enumerated',
+        role: 'info',
+        values: ['horizontal', 'radial', 'tangential', 'auto'],
+        dflt: 'auto',
+        editType: 'plot',
+        description: [
+            'Determines the orientation of text inside slices.',
+            'With *auto* the texts may automatically be',
+            'rotated to fit with the maximum size inside the slice.',
+            'Using *horizontal* option forces text to be horizontal.',
+            'Using *radial* option forces text to be radial.',
+            'Using *tangential* option forces text to be tangential.'
+        ].join(' ')
+    },
     insidetextfont: extendFlat({}, textFontAttrs, {
         description: 'Sets the font used for `textinfo` lying inside the sector.'
     }),
diff --git a/src/traces/pie/defaults.js b/src/traces/pie/defaults.js
index 0d7cfc47343..1b41a052688 100644
--- a/src/traces/pie/defaults.js
+++ b/src/traces/pie/defaults.js
@@ -70,6 +70,10 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
         if(hasOutside) {
             coerce('automargin');
         }
+
+        if(textposition === 'inside' || textposition === 'auto' || Array.isArray(textposition)) {
+            coerce('insidetextorientation');
+        }
     }
 
     handleDomainDefaults(traceOut, layout, coerce);
diff --git a/src/traces/pie/plot.js b/src/traces/pie/plot.js
index 519c8d3a821..fcc4bc1f2ef 100644
--- a/src/traces/pie/plot.js
+++ b/src/traces/pie/plot.js
@@ -16,6 +16,7 @@ var Color = require('../../components/color');
 var Drawing = require('../../components/drawing');
 var Lib = require('../../lib');
 var svgTextUtils = require('../../lib/svg_text_utils');
+var recordMinTextSize = require('../bar/plot').recordMinTextSize;
 
 var helpers = require('./helpers');
 var eventData = require('./event_data');
@@ -52,7 +53,7 @@ function plot(gd, cdModule) {
             ];
             var hasOutsideText = false;
 
-            slices.each(function(pt) {
+            slices.each(function(pt, i) {
                 if(pt.hidden) {
                     d3.select(this).selectAll('path,g').remove();
                     return;
@@ -144,15 +145,18 @@ function plot(gd, cdModule) {
                         s.attr('data-notex', 1);
                     });
 
+                    var font = Lib.ensureUniformFontSize(gd, textPosition === 'outside' ?
+                        determineOutsideTextFont(trace, pt, fullLayout.font) :
+                        determineInsideTextFont(trace, pt, fullLayout.font)
+                    );
+
                     sliceText.text(pt.text)
                         .attr({
                             'class': 'slicetext',
                             transform: '',
                             'text-anchor': 'middle'
                         })
-                        .call(Drawing.font, textPosition === 'outside' ?
-                          determineOutsideTextFont(trace, pt, gd._fullLayout.font) :
-                          determineInsideTextFont(trace, pt, gd._fullLayout.font))
+                        .call(Drawing.font, font)
                         .call(svgTextUtils.convertToTspans, gd);
 
                     // position the text relative to the slice
@@ -164,36 +168,37 @@ function plot(gd, cdModule) {
                     } else {
                         transform = transformInsideText(textBB, pt, cd0);
                         if(textPosition === 'auto' && transform.scale < 1) {
-                            sliceText.call(Drawing.font, trace.outsidetextfont);
-                            if(trace.outsidetextfont.family !== trace.insidetextfont.family ||
-                                    trace.outsidetextfont.size !== trace.insidetextfont.size) {
-                                textBB = Drawing.bBox(sliceText.node());
-                            }
+                            var newFont = Lib.ensureUniformFontSize(gd, trace.outsidetextfont);
+
+                            sliceText.call(Drawing.font, newFont);
+                            textBB = Drawing.bBox(sliceText.node());
+
                             transform = transformOutsideText(textBB, pt);
                         }
                     }
 
-                    var translateX = cx + pt.pxmid[0] * transform.rCenter + (transform.x || 0);
-                    var translateY = cy + pt.pxmid[1] * transform.rCenter + (transform.y || 0);
+                    var textPosAngle = transform.textPosAngle;
+                    var textXY = textPosAngle === undefined ? pt.pxmid : getCoords(cd0.r, textPosAngle);
+                    transform.targetX = cx + textXY[0] * transform.rCenter + (transform.x || 0);
+                    transform.targetY = cy + textXY[1] * transform.rCenter + (transform.y || 0);
+                    computeTransform(transform, textBB);
 
                     // save some stuff to use later ensure no labels overlap
                     if(transform.outside) {
-                        pt.yLabelMin = translateY - textBB.height / 2;
-                        pt.yLabelMid = translateY;
-                        pt.yLabelMax = translateY + textBB.height / 2;
+                        var targetY = transform.targetY;
+                        pt.yLabelMin = targetY - textBB.height / 2;
+                        pt.yLabelMid = targetY;
+                        pt.yLabelMax = targetY + textBB.height / 2;
                         pt.labelExtraX = 0;
                         pt.labelExtraY = 0;
                         hasOutsideText = true;
                     }
 
-                    sliceText.attr('transform',
-                        'translate(' + translateX + ',' + translateY + ')' +
-                        (transform.scale < 1 ? ('scale(' + transform.scale + ')') : '') +
-                        (transform.rotate ? ('rotate(' + transform.rotate + ')') : '') +
-                        'translate(' +
-                            (-(textBB.left + textBB.right) / 2) + ',' +
-                            (-(textBB.top + textBB.bottom) / 2) +
-                        ')');
+                    transform.fontSize = font.size;
+                    recordMinTextSize(trace.type, transform, fullLayout);
+                    cd[i].transform = transform;
+
+                    sliceText.attr('transform', Lib.getTextTransform(transform));
                 });
             });
 
@@ -298,8 +303,10 @@ function plotTextLines(slices, trace) {
         // first move the text to its new location
         var sliceText = sliceTop.select('g.slicetext text');
 
-        sliceText.attr('transform', 'translate(' + pt.labelExtraX + ',' + pt.labelExtraY + ')' +
-            sliceText.attr('transform'));
+        pt.transform.targetX += pt.labelExtraX;
+        pt.transform.targetY += pt.labelExtraY;
+
+        sliceText.attr('transform', Lib.getTextTransform(pt.transform));
 
         // then add a line to the new location
         var lineStartX = pt.cxFinal + pt.pxmid[0];
@@ -549,59 +556,150 @@ function prerenderTitles(cdModule, gd) {
 
 function transformInsideText(textBB, pt, cd0) {
     var textDiameter = Math.sqrt(textBB.width * textBB.width + textBB.height * textBB.height);
-    var textAspect = textBB.width / textBB.height;
     var halfAngle = pt.halfangle;
+    var midAngle = pt.midangle;
     var ring = pt.ring;
     var rInscribed = pt.rInscribed;
     var r = cd0.r || pt.rpx1;
+    var orientation = cd0.trace.insidetextorientation;
+    var isHorizontal = orientation === 'horizontal';
+    var isTangential = orientation === 'tangential';
+    var isRadial = orientation === 'radial';
+    var isAuto = orientation === 'auto';
+    var isCircle = (ring === 1) && (Math.abs(pt.startangle - pt.stopangle) === Math.PI * 2);
+    var allTransforms = [];
+    var newT;
+
+    if(!isAuto) {
+        // max size if text is placed (horizontally) at the top or bottom of the arc
+
+        var considerCrossing = function(angle, key) {
+            if(isCrossing(pt, angle)) {
+                var dStart = Math.abs(angle - pt.startangle);
+                var dStop = Math.abs(angle - pt.stopangle);
+
+                var closestEdge = dStart < dStop ? dStart : dStop;
+
+                if(key === 'tan') {
+                    newT = calcTanTransform(textBB, r, ring, closestEdge, 0);
+                } else { // case of 'rad'
+                    newT = calcRadTransform(textBB, r, ring, closestEdge, Math.PI / 2);
+                }
+                newT.textPosAngle = angle;
 
-    // max size text can be inserted inside without rotating it
-    // this inscribes the text rectangle in a circle, which is then inscribed
-    // in the slice, so it will be an underestimate, which some day we may want
-    // to improve so this case can get more use
-    var transform = {
-        scale: rInscribed * r * 2 / textDiameter,
+                allTransforms.push(newT);
+            }
+        };
 
-        // and the center position and rotation in this case
-        rCenter: 1 - rInscribed,
-        rotate: 0
-    };
+        // to cover all cases with trace.rotation added
+        var i;
+        if(isHorizontal || isTangential) {
+            // top
+            for(i = 4; i >= -4; i -= 2) considerCrossing(Math.PI * i, 'tan');
+            // bottom
+            for(i = 4; i >= -4; i -= 2) considerCrossing(Math.PI * (i + 1), 'tan');
+        }
+        if(isHorizontal || isRadial) {
+            // left
+            for(i = 4; i >= -4; i -= 2) considerCrossing(Math.PI * (i + 1.5), 'rad');
+            // right
+            for(i = 4; i >= -4; i -= 2) considerCrossing(Math.PI * (i + 0.5), 'rad');
+        }
+    }
 
-    if(transform.scale >= 1) return transform;
+    if(isCircle || isAuto || isHorizontal) {
+        // max size text can be inserted inside without rotating it
+        // this inscribes the text rectangle in a circle, which is then inscribed
+        // in the slice, so it will be an underestimate, which some day we may want
+        // to improve so this case can get more use
+        newT = {
+            scale: rInscribed * r * 2 / textDiameter,
+
+            // and the center position and rotation in this case
+            rCenter: 1 - rInscribed,
+            rotate: 0
+        };
 
-    // max size if text is rotated radially
-    var Qr = textAspect + 1 / (2 * Math.tan(halfAngle));
-    var maxHalfHeightRotRadial = r * Math.min(
-        1 / (Math.sqrt(Qr * Qr + 0.5) + Qr),
-        ring / (Math.sqrt(textAspect * textAspect + ring / 2) + textAspect)
+        newT.textPosAngle = (pt.startangle + pt.stopangle) / 2;
+        if(newT.scale >= 1) return newT;
+
+        allTransforms.push(newT);
+    }
+
+    if(isAuto || isRadial) {
+        newT = calcRadTransform(textBB, r, ring, halfAngle, midAngle);
+        newT.textPosAngle = (pt.startangle + pt.stopangle) / 2;
+        allTransforms.push(newT);
+    }
+
+    if(isAuto || isTangential) {
+        newT = calcTanTransform(textBB, r, ring, halfAngle, midAngle);
+        newT.textPosAngle = (pt.startangle + pt.stopangle) / 2;
+        allTransforms.push(newT);
+    }
+
+    var id = 0;
+    var maxScale = 0;
+    for(var k = 0; k < allTransforms.length; k++) {
+        var s = allTransforms[k].scale;
+        if(maxScale < s) {
+            maxScale = s;
+            id = k;
+        }
+
+        if(!isAuto && maxScale >= 1) {
+            // respect test order for non-auto options
+            break;
+        }
+    }
+    return allTransforms[id];
+}
+
+function isCrossing(pt, angle) {
+    var start = pt.startangle;
+    var stop = pt.stopangle;
+    return (
+        (start > angle && angle > stop) ||
+        (start < angle && angle < stop)
     );
-    var radialTransform = {
-        scale: maxHalfHeightRotRadial * 2 / textBB.height,
-        rCenter: Math.cos(maxHalfHeightRotRadial / r) -
-            maxHalfHeightRotRadial * textAspect / r,
-        rotate: (180 / Math.PI * pt.midangle + 720) % 180 - 90
+}
+
+function calcRadTransform(textBB, r, ring, halfAngle, midAngle) {
+    // max size if text is rotated radially
+    var a = textBB.width / textBB.height;
+    var s = calcMaxHalfSize(a, halfAngle, r, ring);
+    return {
+        scale: s * 2 / textBB.height,
+        rCenter: calcRCenter(a, s / r),
+        rotate: calcRotate(midAngle)
     };
+}
 
+function calcTanTransform(textBB, r, ring, halfAngle, midAngle) {
     // max size if text is rotated tangentially
-    var aspectInv = 1 / textAspect;
-    var Qt = aspectInv + 1 / (2 * Math.tan(halfAngle));
-    var maxHalfWidthTangential = r * Math.min(
-        1 / (Math.sqrt(Qt * Qt + 0.5) + Qt),
-        ring / (Math.sqrt(aspectInv * aspectInv + ring / 2) + aspectInv)
-    );
-    var tangentialTransform = {
-        scale: maxHalfWidthTangential * 2 / textBB.width,
-        rCenter: Math.cos(maxHalfWidthTangential / r) -
-            maxHalfWidthTangential / textAspect / r,
-        rotate: (180 / Math.PI * pt.midangle + 810) % 180 - 90
+    var a = textBB.height / textBB.width;
+    var s = calcMaxHalfSize(a, halfAngle, r, ring);
+    return {
+        scale: s * 2 / textBB.width,
+        rCenter: calcRCenter(a, s / r),
+        rotate: calcRotate(midAngle + Math.PI / 2)
     };
-    // if we need a rotated transform, pick the biggest one
-    // even if both are bigger than 1
-    var rotatedTransform = tangentialTransform.scale > radialTransform.scale ?
-            tangentialTransform : radialTransform;
+}
+
+function calcRCenter(a, b) {
+    return Math.cos(b) - a * b;
+}
+
+function calcRotate(t) {
+    return (180 / Math.PI * t + 720) % 180 - 90;
+}
 
-    if(transform.scale < 1 && rotatedTransform.scale > transform.scale) return rotatedTransform;
-    return transform;
+function calcMaxHalfSize(a, halfAngle, r, ring) {
+    var q = a + 1 / (2 * Math.tan(halfAngle));
+    return r * Math.min(
+        1 / (Math.sqrt(q * q + 0.5) + q),
+        ring / (Math.sqrt(a * a + ring / 2) + a)
+    );
 }
 
 function getInscribedRadiusFraction(pt, cd0) {
@@ -921,6 +1019,7 @@ function groupScale(cdModule, scaleGroups) {
 
 function setCoords(cd) {
     var cd0 = cd[0];
+    var r = cd0.r;
     var trace = cd0.trace;
     var currentAngle = trace.rotation * Math.PI / 180;
     var angleFactor = 2 * Math.PI / cd0.vTotal;
@@ -941,11 +1040,7 @@ function setCoords(cd) {
         lastPt = 'px0';
     }
 
-    function getCoords(angle) {
-        return [cd0.r * Math.sin(angle), -cd0.r * Math.cos(angle)];
-    }
-
-    currentCoords = getCoords(currentAngle);
+    currentCoords = getCoords(r, currentAngle);
 
     for(i = 0; i < cd.length; i++) {
         cdi = cd[i];
@@ -953,12 +1048,13 @@ function setCoords(cd) {
 
         cdi[firstPt] = currentCoords;
 
+        cdi.startangle = currentAngle;
         currentAngle += angleFactor * cdi.v / 2;
-        cdi.pxmid = getCoords(currentAngle);
+        cdi.pxmid = getCoords(r, currentAngle);
         cdi.midangle = currentAngle;
-
         currentAngle += angleFactor * cdi.v / 2;
-        currentCoords = getCoords(currentAngle);
+        currentCoords = getCoords(r, currentAngle);
+        cdi.stopangle = currentAngle;
 
         cdi[lastPt] = currentCoords;
 
@@ -970,6 +1066,10 @@ function setCoords(cd) {
     }
 }
 
+function getCoords(r, angle) {
+    return [r * Math.sin(angle), -r * Math.cos(angle)];
+}
+
 function formatSliceLabel(gd, pt, cd0) {
     var fullLayout = gd._fullLayout;
     var trace = cd0.trace;
@@ -1024,6 +1124,25 @@ function formatSliceLabel(gd, pt, cd0) {
         }
     }
 }
+
+function computeTransform(
+    transform,  // inout
+    textBB      // in
+) {
+    var rotate = transform.rotate;
+    var scale = transform.scale;
+    if(scale > 1) scale = 1;
+
+    var a = rotate * Math.PI / 180;
+    var cosA = Math.cos(a);
+    var sinA = Math.sin(a);
+    var midX = (textBB.left + textBB.right) / 2;
+    var midY = (textBB.top + textBB.bottom) / 2;
+    transform.textX = midX * cosA - midY * sinA;
+    transform.textY = midX * sinA + midY * cosA;
+    transform.noCenter = true;
+}
+
 module.exports = {
     plot: plot,
     formatSliceLabel: formatSliceLabel,
@@ -1033,4 +1152,5 @@ module.exports = {
     prerenderTitles: prerenderTitles,
     layoutAreas: layoutAreas,
     attachFxHandlers: attachFxHandlers,
+    computeTransform: computeTransform
 };
diff --git a/src/traces/pie/style.js b/src/traces/pie/style.js
index 86b1e46cc0b..c2261b49f96 100644
--- a/src/traces/pie/style.js
+++ b/src/traces/pie/style.js
@@ -11,9 +11,13 @@
 var d3 = require('d3');
 
 var styleOne = require('./style_one');
+var resizeText = require('../bar/style').resizeText;
 
 module.exports = function style(gd) {
-    gd._fullLayout._pielayer.selectAll('.trace').each(function(cd) {
+    var s = gd._fullLayout._pielayer.selectAll('.trace');
+    resizeText(gd, s, 'pie');
+
+    s.each(function(cd) {
         var cd0 = cd[0];
         var trace = cd0.trace;
         var traceSelection = d3.select(this);
diff --git a/src/traces/sunburst/attributes.js b/src/traces/sunburst/attributes.js
index adb667df11b..6209ff5d64c 100644
--- a/src/traces/sunburst/attributes.js
+++ b/src/traces/sunburst/attributes.js
@@ -192,6 +192,7 @@ module.exports = {
     }),
 
     textfont: pieAttrs.textfont,
+    insidetextorientation: pieAttrs.insidetextorientation,
     insidetextfont: pieAttrs.insidetextfont,
     outsidetextfont: pieAttrs.outsidetextfont,
 
diff --git a/src/traces/sunburst/defaults.js b/src/traces/sunburst/defaults.js
index 43fb7766675..7ab81f3b1c9 100644
--- a/src/traces/sunburst/defaults.js
+++ b/src/traces/sunburst/defaults.js
@@ -68,6 +68,8 @@ module.exports = function supplyDefaults(traceIn, traceOut, defaultColor, layout
         moduleHasInsideanchor: false
     });
 
+    coerce('insidetextorientation');
+
     handleDomainDefaults(traceOut, layout, coerce);
 
     // do not support transforms for now
diff --git a/src/traces/sunburst/plot.js b/src/traces/sunburst/plot.js
index db61cb8d8ed..67e7b283f40 100644
--- a/src/traces/sunburst/plot.js
+++ b/src/traces/sunburst/plot.js
@@ -14,8 +14,10 @@ var d3Hierarchy = require('d3-hierarchy');
 var Drawing = require('../../components/drawing');
 var Lib = require('../../lib');
 var svgTextUtils = require('../../lib/svg_text_utils');
-
-var transformInsideText = require('../pie/plot').transformInsideText;
+var recordMinTextSize = require('../bar/plot').recordMinTextSize;
+var piePlot = require('../pie/plot');
+var computeTransform = piePlot.computeTransform;
+var transformInsideText = piePlot.transformInsideText;
 var styleOne = require('./style').styleOne;
 
 var attachFxHandlers = require('./fx');
@@ -148,8 +150,9 @@ function plotOne(gd, cd, element, transitionOpts) {
     // slice path generation fn
     var pathSlice = function(d) { return Lib.pathAnnulus(d.rpx0, d.rpx1, d.x0, d.x1, cx, cy); };
     // slice text translate x/y
-    var transTextX = function(d) { return cx + d.pxmid[0] * d.transform.rCenter + (d.transform.x || 0); };
-    var transTextY = function(d) { return cy + d.pxmid[1] * d.transform.rCenter + (d.transform.y || 0); };
+
+    var getTargetX = function(d) { return cx + getTextXY(d)[0] * (d.transform.rCenter || 0) + (d.transform.x || 0); };
+    var getTargetY = function(d) { return cy + getTextXY(d)[1] * (d.transform.rCenter || 0) + (d.transform.y || 0); };
 
     slices = slices.data(sliceData, helpers.getPtId);
 
@@ -214,6 +217,8 @@ function plotOne(gd, cd, element, transitionOpts) {
         pt.xmid = (pt.x0 + pt.x1) / 2;
         pt.pxmid = rx2px(pt.rpx1, pt.xmid);
         pt.midangle = -(pt.xmid - Math.PI / 2);
+        pt.startangle = -(pt.x0 - Math.PI / 2);
+        pt.stopangle = -(pt.x1 - Math.PI / 2);
         pt.halfangle = 0.5 * Math.min(Lib.angleDelta(pt.x0, pt.x1) || Math.PI, Math.PI);
         pt.ring = 1 - (pt.rpx0 / pt.rpx1);
         pt.rInscribed = getInscribedRadiusFraction(pt, trace);
@@ -248,26 +253,28 @@ function plotOne(gd, cd, element, transitionOpts) {
             s.attr('data-notex', 1);
         });
 
+        var font = Lib.ensureUniformFontSize(gd, helpers.determineTextFont(trace, pt, fullLayout.font));
+
         sliceText.text(exports.formatSliceLabel(pt, entry, trace, cd, fullLayout))
             .classed('slicetext', true)
             .attr('text-anchor', 'middle')
-            .call(Drawing.font, helpers.determineTextFont(trace, pt, fullLayout.font))
+            .call(Drawing.font, font)
             .call(svgTextUtils.convertToTspans, gd);
 
         // position the text relative to the slice
         var textBB = Drawing.bBox(sliceText.node());
         pt.transform = transformInsideText(textBB, pt, cd0);
-        pt.translateX = transTextX(pt);
-        pt.translateY = transTextY(pt);
+        pt.transform.targetX = getTargetX(pt);
+        pt.transform.targetY = getTargetY(pt);
 
         var strTransform = function(d, textBB) {
-            return 'translate(' + d.translateX + ',' + d.translateY + ')' +
-                (d.transform.scale < 1 ? ('scale(' + d.transform.scale + ')') : '') +
-                (d.transform.rotate ? ('rotate(' + d.transform.rotate + ')') : '') +
-                'translate(' +
-                    (-(textBB.left + textBB.right) / 2) + ',' +
-                    (-(textBB.top + textBB.bottom) / 2) +
-                ')';
+            var transform = d.transform;
+            computeTransform(transform, textBB);
+
+            transform.fontSize = font.size;
+            recordMinTextSize(trace.type, transform, fullLayout);
+
+            return Lib.getTextTransform(transform);
         };
 
         if(hasTransition) {
@@ -370,6 +377,7 @@ function plotOne(gd, cd, element, transitionOpts) {
             prev = {
                 rpx1: pt.rpx1,
                 transform: {
+                    textPosAngle: transform.textPosAngle,
                     scale: 0,
                     rotate: transform.rotate,
                     rCenter: transform.rCenter,
@@ -402,6 +410,7 @@ function plotOne(gd, cd, element, transitionOpts) {
             }
         }
 
+        var textPosAngleFn = d3.interpolate(prev.transform.textPosAngle, pt.transform.textPosAngle);
         var rpx1Fn = d3.interpolate(prev.rpx1, pt.rpx1);
         var x0Fn = d3.interpolate(prev.x0, pt.x0);
         var x1Fn = d3.interpolate(prev.x1, pt.x1);
@@ -421,28 +430,30 @@ function plotOne(gd, cd, element, transitionOpts) {
             var x0 = x0Fn(t);
             var x1 = x1Fn(t);
             var rCenter = rCenterFn(t);
+            var pxmid = rx2px(rpx1, (x0 + x1) / 2);
+            var textPosAngle = textPosAngleFn(t);
 
             var d = {
-                pxmid: rx2px(rpx1, (x0 + x1) / 2),
+                pxmid: pxmid,
+                rpx1: rpx1,
                 transform: {
+                    textPosAngle: textPosAngle,
                     rCenter: rCenter,
                     x: transform.x,
                     y: transform.y
                 }
             };
 
-            var out = {
-                rpx1: rpx1Fn(t),
-                translateX: transTextX(d),
-                translateY: transTextY(d),
+            recordMinTextSize(trace.type, transform, fullLayout);
+            return {
                 transform: {
+                    targetX: getTargetX(d),
+                    targetY: getTargetY(d),
                     scale: scaleFn(t),
                     rotate: rotateFn(t),
                     rCenter: rCenter
                 }
             };
-
-            return out;
         };
     }
 
@@ -600,3 +611,11 @@ function getInscribedRadiusFraction(pt) {
         ));
     }
 }
+
+function getTextXY(d) {
+    return getCoords(d.rpx1, d.transform.textPosAngle);
+}
+
+function getCoords(r, angle) {
+    return [r * Math.sin(angle), -r * Math.cos(angle)];
+}
diff --git a/src/traces/sunburst/style.js b/src/traces/sunburst/style.js
index 687ae7e3be0..8c8ebba53b4 100644
--- a/src/traces/sunburst/style.js
+++ b/src/traces/sunburst/style.js
@@ -11,9 +11,13 @@
 var d3 = require('d3');
 var Color = require('../../components/color');
 var Lib = require('../../lib');
+var resizeText = require('../bar/style').resizeText;
 
 function style(gd) {
-    gd._fullLayout._sunburstlayer.selectAll('.trace').each(function(cd) {
+    var s = gd._fullLayout._sunburstlayer.selectAll('.trace');
+    resizeText(gd, s, 'sunburst');
+
+    s.each(function(cd) {
         var gTrace = d3.select(this);
         var cd0 = cd[0];
         var trace = cd0.trace;
diff --git a/src/traces/treemap/draw_ancestors.js b/src/traces/treemap/draw_ancestors.js
index 776a4ccf01a..d209f657953 100644
--- a/src/traces/treemap/draw_ancestors.js
+++ b/src/traces/treemap/draw_ancestors.js
@@ -141,10 +141,12 @@ module.exports = function drawAncestors(gd, cd, entry, slices, opts) {
             s.attr('data-notex', 1);
         });
 
+        var font = Lib.ensureUniformFontSize(gd, helpers.determineTextFont(trace, pt, fullLayout.font, trace.pathdir));
+
         sliceText.text(pt._text || ' ') // use one space character instead of a blank string to avoid jumps during transition
             .classed('slicetext', true)
             .attr('text-anchor', 'start')
-            .call(Drawing.font, helpers.determineTextFont(trace, pt, fullLayout.font, trace.pathdir))
+            .call(Drawing.font, font)
             .call(svgTextUtils.convertToTspans, gd);
 
         pt.textBB = Drawing.bBox(sliceText.node());
@@ -152,12 +154,17 @@ module.exports = function drawAncestors(gd, cd, entry, slices, opts) {
             onPathbar: true
         });
 
+        pt.transform.fontSize = font.size;
+
         if(helpers.isOutsideText(trace, pt)) {
             // consider in/out diff font sizes
-            pt.transform.targetY -= (
-                helpers.getOutsideTextFontKey('size', trace, pt, fullLayout.font) -
-                helpers.getInsideTextFontKey('size', trace, pt, fullLayout.font)
-            );
+            var outsideFont = helpers.getOutsideTextFontKey('size', trace, pt, fullLayout.font);
+            var insideFont = helpers.getInsideTextFontKey('size', trace, pt, fullLayout.font);
+
+            var diffFontSize = outsideFont - insideFont;
+
+            pt.transform.targetY -= diffFontSize;
+            pt.transform.fontSize -= diffFontSize;
         }
 
         if(hasTransition) {
diff --git a/src/traces/treemap/draw_descendants.js b/src/traces/treemap/draw_descendants.js
index 8990ed0ce00..c8a345ec525 100644
--- a/src/traces/treemap/draw_descendants.js
+++ b/src/traces/treemap/draw_descendants.js
@@ -182,16 +182,19 @@ module.exports = function drawDescendants(gd, cd, entry, slices, opts) {
             s.attr('data-notex', 1);
         });
 
+        var font = Lib.ensureUniformFontSize(gd, helpers.determineTextFont(trace, pt, fullLayout.font));
+
         sliceText.text(pt._text || ' ') // use one space character instead of a blank string to avoid jumps during transition
             .classed('slicetext', true)
             .attr('text-anchor', hasRight ? 'end' : (hasLeft || isHeader) ? 'start' : 'middle')
-            .call(Drawing.font, helpers.determineTextFont(trace, pt, fullLayout.font))
+            .call(Drawing.font, font)
             .call(svgTextUtils.convertToTspans, gd);
 
         pt.textBB = Drawing.bBox(sliceText.node());
         pt.transform = toMoveInsideSlice(pt, {
             isHeader: isHeader
         });
+        pt.transform.fontSize = font.size;
 
         if(hasTransition) {
             sliceText.transition().attrTween('transform', function(pt2) {
diff --git a/src/traces/treemap/plot.js b/src/traces/treemap/plot.js
index f6fadac0891..2782d82d04d 100644
--- a/src/traces/treemap/plot.js
+++ b/src/traces/treemap/plot.js
@@ -15,7 +15,9 @@ var helpers = require('../sunburst/helpers');
 
 var Lib = require('../../lib');
 var TEXTPAD = require('../bar/constants').TEXTPAD;
-var toMoveInsideBar = require('../bar/plot').toMoveInsideBar;
+var barPlot = require('../bar/plot');
+var toMoveInsideBar = barPlot.toMoveInsideBar;
+var recordMinTextSize = barPlot.recordMinTextSize;
 
 var constants = require('./constants');
 var drawDescendants = require('./draw_descendants');
@@ -365,6 +367,7 @@ function plotOne(gd, cd, element, transitionOpts) {
             return {};
         }
 
+        recordMinTextSize(trace.type, transform, fullLayout);
         return {
             scale: transform.scale,
             rotate: transform.rotate,
@@ -481,14 +484,16 @@ function plotOne(gd, cd, element, transitionOpts) {
             }
         }
 
+        var transform = pt.transform;
+        recordMinTextSize(trace.type, transform, fullLayout);
         return d3.interpolate(prev, {
             transform: {
-                scale: pt.transform.scale,
-                rotate: pt.transform.rotate,
-                textX: pt.transform.textX,
-                textY: pt.transform.textY,
-                targetX: pt.transform.targetX,
-                targetY: pt.transform.targetY
+                scale: transform.scale,
+                rotate: transform.rotate,
+                textX: transform.textX,
+                textY: transform.textY,
+                targetX: transform.targetX,
+                targetY: transform.targetY
             }
         });
     };
@@ -518,13 +523,16 @@ function plotOne(gd, cd, element, transitionOpts) {
     };
 
     var strTransform = function(d) {
+        var transform = d.transform;
+        recordMinTextSize(trace.type, transform, fullLayout);
+
         return Lib.getTextTransform({
-            textX: d.transform.textX,
-            textY: d.transform.textY,
-            targetX: d.transform.targetX,
-            targetY: d.transform.targetY,
-            scale: d.transform.scale,
-            rotate: d.transform.rotate
+            textX: transform.textX,
+            textY: transform.textY,
+            targetX: transform.targetX,
+            targetY: transform.targetY,
+            scale: transform.scale,
+            rotate: transform.rotate
         });
     };
 
diff --git a/src/traces/treemap/style.js b/src/traces/treemap/style.js
index 9ca251a4c4f..daf41cd1c24 100644
--- a/src/traces/treemap/style.js
+++ b/src/traces/treemap/style.js
@@ -12,9 +12,13 @@ var d3 = require('d3');
 var Color = require('../../components/color');
 var Lib = require('../../lib');
 var helpers = require('../sunburst/helpers');
+var resizeText = require('../bar/style').resizeText;
 
 function style(gd) {
-    gd._fullLayout._treemaplayer.selectAll('.trace').each(function(cd) {
+    var s = gd._fullLayout._treemaplayer.selectAll('.trace');
+    resizeText(gd, s, 'treemap');
+
+    s.each(function(cd) {
         var gTrace = d3.select(this);
         var cd0 = cd[0];
         var trace = cd0.trace;
diff --git a/src/traces/waterfall/style.js b/src/traces/waterfall/style.js
index 8026fb28176..aaf72693f29 100644
--- a/src/traces/waterfall/style.js
+++ b/src/traces/waterfall/style.js
@@ -13,11 +13,13 @@ var d3 = require('d3');
 var Drawing = require('../../components/drawing');
 var Color = require('../../components/color');
 var DESELECTDIM = require('../../constants/interactions').DESELECTDIM;
-
-var styleTextPoints = require('../bar/style').styleTextPoints;
+var barStyle = require('../bar/style');
+var resizeText = barStyle.resizeText;
+var styleTextPoints = barStyle.styleTextPoints;
 
 function style(gd, cd, sel) {
     var s = sel ? sel : d3.select(gd).selectAll('g.waterfalllayer').selectAll('g.trace');
+    resizeText(gd, s, 'waterfall');
 
     s.style('opacity', function(d) { return d[0].trace.opacity; });
 
diff --git a/test/image/baselines/pie_inside-text-orientation.png b/test/image/baselines/pie_inside-text-orientation.png
new file mode 100644
index 00000000000..64af61e6e86
Binary files /dev/null and b/test/image/baselines/pie_inside-text-orientation.png differ
diff --git a/test/image/baselines/sunburst_inside-text-orientation.png b/test/image/baselines/sunburst_inside-text-orientation.png
new file mode 100644
index 00000000000..a77ba3102ea
Binary files /dev/null and b/test/image/baselines/sunburst_inside-text-orientation.png differ
diff --git a/test/image/baselines/sunburst_inside-text-orientation_clock.png b/test/image/baselines/sunburst_inside-text-orientation_clock.png
new file mode 100644
index 00000000000..28ab975ef98
Binary files /dev/null and b/test/image/baselines/sunburst_inside-text-orientation_clock.png differ
diff --git a/test/image/baselines/sunburst_with-without_values.png b/test/image/baselines/sunburst_with-without_values.png
index 80263d41d03..a00afc950f4 100644
Binary files a/test/image/baselines/sunburst_with-without_values.png and b/test/image/baselines/sunburst_with-without_values.png differ
diff --git a/test/image/baselines/uniformtext_bar-like_10_auto.png b/test/image/baselines/uniformtext_bar-like_10_auto.png
new file mode 100644
index 00000000000..b3af71c55e4
Binary files /dev/null and b/test/image/baselines/uniformtext_bar-like_10_auto.png differ
diff --git a/test/image/baselines/uniformtext_bar-like_8_horizontal.png b/test/image/baselines/uniformtext_bar-like_8_horizontal.png
new file mode 100644
index 00000000000..9066539beed
Binary files /dev/null and b/test/image/baselines/uniformtext_bar-like_8_horizontal.png differ
diff --git a/test/image/baselines/uniformtext_bar-like_8_textangle.png b/test/image/baselines/uniformtext_bar-like_8_textangle.png
new file mode 100644
index 00000000000..70382642b5a
Binary files /dev/null and b/test/image/baselines/uniformtext_bar-like_8_textangle.png differ
diff --git a/test/image/baselines/uniformtext_bar_edgecase1.png b/test/image/baselines/uniformtext_bar_edgecase1.png
new file mode 100644
index 00000000000..68554e660fa
Binary files /dev/null and b/test/image/baselines/uniformtext_bar_edgecase1.png differ
diff --git a/test/image/baselines/uniformtext_bar_edgecase2.png b/test/image/baselines/uniformtext_bar_edgecase2.png
new file mode 100644
index 00000000000..9fed91ea3c3
Binary files /dev/null and b/test/image/baselines/uniformtext_bar_edgecase2.png differ
diff --git a/test/image/baselines/uniformtext_bar_edgecase3.png b/test/image/baselines/uniformtext_bar_edgecase3.png
new file mode 100644
index 00000000000..d71ced1c2ca
Binary files /dev/null and b/test/image/baselines/uniformtext_bar_edgecase3.png differ
diff --git a/test/image/baselines/uniformtext_funnelarea.png b/test/image/baselines/uniformtext_funnelarea.png
new file mode 100644
index 00000000000..c5a3fc27dc4
Binary files /dev/null and b/test/image/baselines/uniformtext_funnelarea.png differ
diff --git a/test/image/baselines/uniformtext_pie_16_auto.png b/test/image/baselines/uniformtext_pie_16_auto.png
new file mode 100644
index 00000000000..22277b46af9
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_16_auto.png differ
diff --git a/test/image/baselines/uniformtext_pie_8_horizontal.png b/test/image/baselines/uniformtext_pie_8_horizontal.png
new file mode 100644
index 00000000000..8847a079d5f
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_8_horizontal.png differ
diff --git a/test/image/baselines/uniformtext_pie_8_horizontal_center.png b/test/image/baselines/uniformtext_pie_8_horizontal_center.png
new file mode 100644
index 00000000000..41e1e7af0ca
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_8_horizontal_center.png differ
diff --git a/test/image/baselines/uniformtext_pie_8_radial.png b/test/image/baselines/uniformtext_pie_8_radial.png
new file mode 100644
index 00000000000..67ab4369d93
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_8_radial.png differ
diff --git a/test/image/baselines/uniformtext_pie_8_tangential.png b/test/image/baselines/uniformtext_pie_8_tangential.png
new file mode 100644
index 00000000000..d8b2075be3b
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_8_tangential.png differ
diff --git a/test/image/baselines/uniformtext_pie_inside-text-orientation.png b/test/image/baselines/uniformtext_pie_inside-text-orientation.png
new file mode 100644
index 00000000000..a4b138c519e
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_inside-text-orientation.png differ
diff --git a/test/image/baselines/uniformtext_pie_outside.png b/test/image/baselines/uniformtext_pie_outside.png
new file mode 100644
index 00000000000..b142a904a1d
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_outside.png differ
diff --git a/test/image/baselines/uniformtext_pie_pull.png b/test/image/baselines/uniformtext_pie_pull.png
new file mode 100644
index 00000000000..18073572235
Binary files /dev/null and b/test/image/baselines/uniformtext_pie_pull.png differ
diff --git a/test/image/baselines/uniformtext_sunburst_inside-text-orientation.png b/test/image/baselines/uniformtext_sunburst_inside-text-orientation.png
new file mode 100644
index 00000000000..fa4725ab038
Binary files /dev/null and b/test/image/baselines/uniformtext_sunburst_inside-text-orientation.png differ
diff --git a/test/image/baselines/uniformtext_sunburst_treemap.png b/test/image/baselines/uniformtext_sunburst_treemap.png
new file mode 100644
index 00000000000..eb00334ba3e
Binary files /dev/null and b/test/image/baselines/uniformtext_sunburst_treemap.png differ
diff --git a/test/image/mocks/pie_inside-text-orientation.json b/test/image/mocks/pie_inside-text-orientation.json
new file mode 100644
index 00000000000..e34af7b7fbc
--- /dev/null
+++ b/test/image/mocks/pie_inside-text-orientation.json
@@ -0,0 +1,371 @@
+{
+    "data": [
+        {
+            "name": "horizontal",
+            "title": {
+                "text": "horizontal",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "marker": {
+                "colors": [
+                    "aquamarine",
+                    "brown",
+                    "chocolate",
+                    "darkblue",
+                    "darkgreen",
+                    "forestgreen",
+                    "gold",
+                    "honeydew",
+                    "indigo",
+                    "navajowhite",
+                    "khaki",
+                    "lightblue",
+                    "magenta",
+                    "navy",
+                    "orange",
+                    "pink",
+                    "aqua",
+                    "red",
+                    "silver",
+                    "tomato",
+                    "turquoise",
+                    "violet",
+                    "wheat",
+                    "yellow",
+                    "azure"
+                ]
+            },
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.52,
+                    1
+                ],
+                "y": [
+                    0.52,
+                    1
+                ]
+            }
+        },
+        {
+            "name": "radial",
+            "title": {
+                "text": "radial",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.52,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.48
+                ]
+            }
+        },
+        {
+            "name": "tangential",
+            "title": {
+                "text": "tangential",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.48
+                ],
+                "y": [
+                    0,
+                    0.48
+                ]
+            }
+        },
+        {
+            "name": "auto",
+            "title": {
+                "text": "auto",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "auto",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.48
+                ],
+                "y": [
+                    0.52,
+                    1
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 925,
+        "height": 750,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "title": {
+                "text": "<b>inside text orientation</b>"
+            }
+        },
+        "font": {
+            "size": 14
+        }
+    }
+}
diff --git a/test/image/mocks/sunburst_inside-text-orientation.json b/test/image/mocks/sunburst_inside-text-orientation.json
new file mode 100644
index 00000000000..ad1680a2ca9
--- /dev/null
+++ b/test/image/mocks/sunburst_inside-text-orientation.json
@@ -0,0 +1,430 @@
+{
+    "data": [
+        {
+            "name": "horizontal",
+            "insidetextorientation": "horizontal",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "marker": {
+                "colors": [
+                    "aquamarine",
+                    "brown",
+                    "chocolate",
+                    "darkblue",
+                    "darkgreen",
+                    "forestgreen",
+                    "gold",
+                    "honeydew",
+                    "indigo",
+                    "navajowhite",
+                    "khaki",
+                    "lightblue",
+                    "magenta",
+                    "navy",
+                    "orange",
+                    "pink",
+                    "aqua",
+                    "red",
+                    "silver",
+                    "tomato",
+                    "turquoise",
+                    "violet",
+                    "wheat",
+                    "yellow",
+                    "azure"
+                ]
+            },
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        },
+        {
+            "name": "radial",
+            "insidetextorientation": "radial",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "tangential",
+            "insidetextorientation": "tangential",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "auto",
+            "insidetextorientation": "auto",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 800,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "font": {
+            "size": 14
+        },
+        "shapes": [
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0.5,
+                "y1": 1
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0.5,
+                "y1": 1
+            }
+        ],
+        "annotations": [
+            {
+                "text": "auto",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "tangential",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "radial",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "horizontal",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            }
+        ]
+    }
+}
diff --git a/test/image/mocks/sunburst_inside-text-orientation_clock.json b/test/image/mocks/sunburst_inside-text-orientation_clock.json
new file mode 100644
index 00000000000..a6d7312bbee
--- /dev/null
+++ b/test/image/mocks/sunburst_inside-text-orientation_clock.json
@@ -0,0 +1,397 @@
+{
+    "data": [
+        {
+            "name": "horizontal",
+            "insidetextorientation": "horizontal",
+            "type": "sunburst",
+            "parents": [
+                "",
+                "A",
+                "A",
+                "C",
+                "C",
+                "C",
+                "F",
+                "F",
+                "F",
+                "F",
+                "J",
+                "J",
+                "J",
+                "J",
+                "J",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U"
+            ],
+            "labels": [
+                "A",
+                "B",
+                "C",
+                "D",
+                "E",
+                "F",
+                "G",
+                "H",
+                "I",
+                "J",
+                "K",
+                "L",
+                "M",
+                "N",
+                "O",
+                "P",
+                "Q",
+                "R",
+                "S",
+                "T",
+                "U",
+                "V",
+                "W",
+                "X",
+                "Y",
+                "Z"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        },
+        {
+            "name": "radial",
+            "insidetextorientation": "radial",
+            "type": "sunburst",
+            "parents": [
+                "",
+                "A",
+                "A",
+                "C",
+                "C",
+                "C",
+                "F",
+                "F",
+                "F",
+                "F",
+                "J",
+                "J",
+                "J",
+                "J",
+                "J",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U"
+            ],
+            "labels": [
+                "A",
+                "B",
+                "C",
+                "D",
+                "E",
+                "F",
+                "G",
+                "H",
+                "I",
+                "J",
+                "K",
+                "L",
+                "M",
+                "N",
+                "O",
+                "P",
+                "Q",
+                "R",
+                "S",
+                "T",
+                "U",
+                "V",
+                "W",
+                "X",
+                "Y",
+                "Z"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "tangential",
+            "insidetextorientation": "tangential",
+            "type": "sunburst",
+            "parents": [
+                "",
+                "A",
+                "A",
+                "C",
+                "C",
+                "C",
+                "F",
+                "F",
+                "F",
+                "F",
+                "J",
+                "J",
+                "J",
+                "J",
+                "J",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U"
+            ],
+            "labels": [
+                "A",
+                "B",
+                "C",
+                "D",
+                "E",
+                "F",
+                "G",
+                "H",
+                "I",
+                "J",
+                "K",
+                "L",
+                "M",
+                "N",
+                "O",
+                "P",
+                "Q",
+                "R",
+                "S",
+                "T",
+                "U",
+                "V",
+                "W",
+                "X",
+                "Y",
+                "Z"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "auto",
+            "insidetextorientation": "auto",
+            "type": "sunburst",
+            "parents": [
+                "",
+                "A",
+                "A",
+                "C",
+                "C",
+                "C",
+                "F",
+                "F",
+                "F",
+                "F",
+                "J",
+                "J",
+                "J",
+                "J",
+                "J",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "O",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U",
+                "U"
+            ],
+            "labels": [
+                "A",
+                "B",
+                "C",
+                "D",
+                "E",
+                "F",
+                "G",
+                "H",
+                "I",
+                "J",
+                "K",
+                "L",
+                "M",
+                "N",
+                "O",
+                "P",
+                "Q",
+                "R",
+                "S",
+                "T",
+                "U",
+                "V",
+                "W",
+                "X",
+                "Y",
+                "Z"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 800,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "font": {
+            "size": 14
+        },
+        "shapes": [
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0.5,
+                "y1": 1
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0.5,
+                "y1": 1
+            }
+        ],
+        "annotations": [
+            {
+                "text": "auto",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "tangential",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "radial",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "horizontal",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            }
+        ]
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar-like_10_auto.json b/test/image/mocks/uniformtext_bar-like_10_auto.json
new file mode 100644
index 00000000000..8a959962d28
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar-like_10_auto.json
@@ -0,0 +1,207 @@
+{
+    "data": [
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "auto",
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "visible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "auto",
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                5,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                3,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                4,
+                -0.5,
+                0.25,
+                null
+            ],
+            "measure": [
+                "",
+                "",
+                "",
+                "total"
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible",
+                "very <br>L<br>O<br>N<br>G<br> text"
+            ],
+            "type": "waterfall",
+            "textinfo": "text",
+            "textposition": "inside",
+            "insidetextanchor": "middle",
+            "xaxis": "x4",
+            "yaxis": "y4"
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 20,
+            "b": 20,
+            "l": 20,
+            "r": 20
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>bar, funnel & waterfall uniform text</b><br>with <i>auto</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 10
+        },
+        "barmode": "stack",
+        "xaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis2": {
+            "anchor": "y2",
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis3": {
+            "anchor": "y3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "xaxis4": {
+            "anchor": "y4",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "yaxis2": {
+            "anchor": "x2",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis3": {
+            "anchor": "x3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis4": {
+            "anchor": "x4",
+            "domain": [
+                0,
+                0.48
+            ]
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar-like_8_horizontal.json b/test/image/mocks/uniformtext_bar-like_8_horizontal.json
new file mode 100644
index 00000000000..b791df0d8a8
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar-like_8_horizontal.json
@@ -0,0 +1,214 @@
+{
+    "data": [
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "auto",
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "visible"
+            ],
+            "type": "bar",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "auto",
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                5,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                3,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "inside",
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                4,
+                -0.5,
+                0.25,
+                null
+            ],
+            "measure": [
+                "",
+                "",
+                "",
+                "total"
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible",
+                "very <br>L<br>O<br>N<br>G<br> text"
+            ],
+            "type": "waterfall",
+            "textangle": 0,
+            "textinfo": "text",
+            "textposition": "inside",
+            "insidetextanchor": "middle",
+            "xaxis": "x4",
+            "yaxis": "y4"
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 20,
+            "b": 20,
+            "l": 20,
+            "r": 20
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>bar, funnel & waterfall uniform text</b><br>with <i>horizontal</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        },
+        "barmode": "stack",
+        "xaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis2": {
+            "anchor": "y2",
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis3": {
+            "anchor": "y3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "xaxis4": {
+            "anchor": "y4",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "yaxis2": {
+            "anchor": "x2",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis3": {
+            "anchor": "x3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis4": {
+            "anchor": "x4",
+            "domain": [
+                0,
+                0.48
+            ]
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar-like_8_textangle.json b/test/image/mocks/uniformtext_bar-like_8_textangle.json
new file mode 100644
index 00000000000..a66d1de8ff0
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar-like_8_textangle.json
@@ -0,0 +1,214 @@
+{
+    "data": [
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "auto",
+            "textangle": -90,
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "visible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "auto",
+            "textangle": -90,
+            "xaxis": "x1",
+            "yaxis": "y1"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "inside",
+            "textangle": -90,
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                4,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "bar",
+            "textinfo": "text",
+            "textposition": "inside",
+            "textangle": -90,
+            "xaxis": "x2",
+            "yaxis": "y2"
+        },
+        {
+            "y": [
+                5,
+                1,
+                0.5
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textinfo": "text",
+            "textposition": "inside",
+            "textangle": -90,
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                3,
+                1,
+                0.5
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "funnel",
+            "textinfo": "text",
+            "textposition": "inside",
+            "textangle": -90,
+            "xaxis": "x3",
+            "yaxis": "y3"
+        },
+        {
+            "y": [
+                4,
+                -0.5,
+                0.25,
+                null
+            ],
+            "measure": [
+                "",
+                "",
+                "",
+                "total"
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible",
+                "very <br>L<br>O<br>N<br>G<br> text"
+            ],
+            "type": "waterfall",
+            "textinfo": "text",
+            "textposition": "inside",
+            "insidetextanchor": "middle",
+            "textangle": -90,
+            "xaxis": "x4",
+            "yaxis": "y4"
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 20,
+            "b": 20,
+            "l": 20,
+            "r": 20
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>bar, funnel & waterfall uniform text</b><br>with vertical orientation<br>textangle:-90 | minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        },
+        "barmode": "stack",
+        "xaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis2": {
+            "anchor": "y2",
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "xaxis3": {
+            "anchor": "y3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "xaxis4": {
+            "anchor": "y4",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis": {
+            "domain": [
+                0,
+                0.48
+            ]
+        },
+        "yaxis2": {
+            "anchor": "x2",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis3": {
+            "anchor": "x3",
+            "domain": [
+                0.52,
+                1
+            ]
+        },
+        "yaxis4": {
+            "anchor": "x4",
+            "domain": [
+                0,
+                0.48
+            ]
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar_edgecase1.json b/test/image/mocks/uniformtext_bar_edgecase1.json
new file mode 100644
index 00000000000..93326891cf9
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar_edgecase1.json
@@ -0,0 +1,42 @@
+{
+    "data": [
+        {
+            "type": "bar",
+            "orientation": "h",
+            "x": [
+                1,
+                2,
+                3,
+                4,
+                5
+            ],
+            "y": [
+                1,
+                2,
+                3,
+                4,
+                5
+            ],
+            "text": [
+                "9",
+                "iiiii",
+                "i",
+                "d",
+                "50"
+            ],
+            "textposition": "auto",
+            "textangle": 0
+        }
+    ],
+    "layout": {
+        "height": 300,
+        "width": 500,
+        "font": {
+            "size": 24
+        },
+        "uniformtext": {
+            "minsize": 9,
+            "mode": "hide"
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar_edgecase2.json b/test/image/mocks/uniformtext_bar_edgecase2.json
new file mode 100644
index 00000000000..ce7ab047d71
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar_edgecase2.json
@@ -0,0 +1,42 @@
+{
+    "data": [
+        {
+            "type": "bar",
+            "orientation": "v",
+            "x": [
+                1,
+                2,
+                3,
+                4,
+                5
+            ],
+            "y": [
+                1,
+                2,
+                3,
+                4,
+                5
+            ],
+            "text": [
+                "9",
+                "iiiiiii",
+                "i",
+                "d",
+                "50"
+            ],
+            "textposition": "inside",
+            "textangle": 0
+        }
+    ],
+    "layout": {
+        "height": 500,
+        "width": 300,
+        "font": {
+            "size": 24
+        },
+        "uniformtext": {
+            "minsize": 10,
+            "mode": "hide"
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_bar_edgecase3.json b/test/image/mocks/uniformtext_bar_edgecase3.json
new file mode 100644
index 00000000000..aaef5d09958
--- /dev/null
+++ b/test/image/mocks/uniformtext_bar_edgecase3.json
@@ -0,0 +1,34 @@
+{
+    "data": [
+        {
+            "type": "bar",
+            "y": [
+                999,
+                4999,
+                8999,
+                12999,
+                16999,
+                20999,
+                24999,
+                28999,
+                32999,
+                36999,
+                40999,
+                44999
+            ],
+            "texttemplate": "%{y}",
+            "textposition": "auto",
+            "textangle": 0,
+            "textfont": {
+                "size": 16
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 600,
+        "uniformtext": {
+            "mode": "hide"
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_funnelarea.json b/test/image/mocks/uniformtext_funnelarea.json
new file mode 100644
index 00000000000..a9dca96a617
--- /dev/null
+++ b/test/image/mocks/uniformtext_funnelarea.json
@@ -0,0 +1,159 @@
+{
+    "data": [
+        {
+            "baseratio": 0,
+            "aspectratio": 2,
+            "type": "funnelarea",
+            "values": [6, 5, 4, 3, 2, 1],
+            "textinfo": "value",
+            "title": {
+                "position": "top right",
+                "text": "1 - 6 no group"
+            },
+            "domain": {
+                "x": [0.7, 1],
+                "y": [0.7, 1]
+            }
+        },
+        {
+            "baseratio": 0.5,
+            "aspectratio": 2,
+            "type": "funnelarea",
+            "values": [16, 15, 14, 13, 12, 11],
+            "textinfo": "value",
+            "title": {
+                "position": "top right",
+                "text": "11 - 16 no group"
+            },
+            "domain": {
+                "x": [0.7, 1],
+                "y": [0.35, 0.65]
+            }
+        },
+        {
+            "baseratio": 1,
+            "aspectratio": 2,
+            "type": "funnelarea",
+            "values": [60, 50, 40, 30, 20, 10],
+            "textinfo": "value",
+            "title": {
+                "position": "top right",
+                "text": "10 - 60 no group"
+            },
+            "domain": {
+                "x": [0.7, 1],
+                "y": [0, 0.3]
+            }
+        },
+        {
+            "baseratio": 0,
+            "aspectratio": 1,
+            "type": "funnelarea",
+            "values": [6, 5, 4, 3, 2, 1],
+            "textinfo": "value",
+            "title": {
+                "position": "top center",
+                "text": "1 - 6 no group"
+            },
+            "domain": {
+                "x": [0.35, 0.65],
+                "y": [0.7, 1]
+            }
+        },
+        {
+            "baseratio": 0.5,
+            "aspectratio": 1,
+            "type": "funnelarea",
+            "title": {
+                "position": "top center",
+                "text": "11 - 16 no group"
+            },
+            "values": [16, 15, 14, 13, 12, 11],
+            "textinfo": "value",
+            "domain": {
+                "x": [0.35, 0.65],
+                "y": [0.35, 0.65]
+            }
+        },
+        {
+            "baseratio": 1,
+            "aspectratio": 1,
+            "type": "funnelarea",
+            "values": [60, 50, 40, 30, 20, 10],
+            "textinfo": "value",
+            "title": {
+                "position": "top center",
+                "text": "10 - 60 no group"
+            },
+            "domain": {
+                "x": [0.35, 0.65],
+                "y": [0, 0.3]
+            }
+        },
+        {
+            "baseratio": 0,
+            "aspectratio": 0.5,
+            "type": "funnelarea",
+            "values": [6, 5, 4, 3, 2, 1],
+            "textinfo": "value",
+            "title": {
+                "position": "top left",
+                "text": "1 - 6 no group"
+            },
+            "domain": {
+                "x": [0, 0.3],
+                "y": [0.7, 1]
+            }
+        },
+        {
+            "baseratio": 0.5,
+            "aspectratio": 0.5,
+            "type": "funnelarea",
+            "values": [16, 15, 14, 13, 12, 11],
+            "textinfo": "value",
+            "title": {
+                "position": "top left",
+                "text": "11 - 16 no group"
+            },
+            "domain": {
+                "x": [0, 0.3],
+                "y": [0.35, 0.65]
+            }
+        },
+        {
+            "baseratio": 1,
+            "aspectratio": 0.5,
+            "type": "funnelarea",
+            "values": [60, 50, 40, 30, 20, 10],
+            "textinfo": "value",
+            "title": {
+                "position": "top left",
+                "text": "10 - 60 no group"
+            },
+            "domain": {
+                "x": [0, 0.3],
+                "y": [0, 0.3]
+            }
+        }
+    ],
+    "layout": {
+        "hiddenlabels": ["1", "4"],
+        "width": 800,
+        "height": 800,
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": "16"
+        },
+        "shapes": [
+            { "type": "rect", "layer": "below", "x0": 0, "x1": 0.3, "y0": 0, "y1": 0.3 },
+            { "type": "rect", "layer": "below", "x0": 0, "x1": 0.3, "y0": 0.35, "y1": 0.65 },
+            { "type": "rect", "layer": "below", "x0": 0, "x1": 0.3, "y0": 0.7, "y1": 1 },
+            { "type": "rect", "layer": "below", "x0": 0.35, "x1": 0.65, "y0": 0, "y1": 0.3 },
+            { "type": "rect", "layer": "below", "x0": 0.35, "x1": 0.65, "y0": 0.35, "y1": 0.65 },
+            { "type": "rect", "layer": "below", "x0": 0.35, "x1": 0.65, "y0": 0.7, "y1": 1 },
+            { "type": "rect", "layer": "below", "x0": 0.7, "x1": 1, "y0": 0, "y1": 0.3 },
+            { "type": "rect", "layer": "below", "x0": 0.7, "x1": 1, "y0": 0.35, "y1": 0.65 },
+            { "type": "rect", "layer": "below", "x0": 0.7, "x1": 1, "y0": 0.7, "y1": 1 }
+        ]
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_16_auto.json b/test/image/mocks/uniformtext_pie_16_auto.json
new file mode 100644
index 00000000000..28dceeed95e
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_16_auto.json
@@ -0,0 +1,192 @@
+{
+    "data": [
+        {
+            "rotation": -360,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -360,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                10,
+                1,
+                0.1
+            ],
+            "type": "pie",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>auto</i> orientation<br>minsize=16"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 16
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_8_horizontal.json b/test/image/mocks/uniformtext_pie_8_horizontal.json
new file mode 100644
index 00000000000..20d952a2f30
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_8_horizontal.json
@@ -0,0 +1,240 @@
+{
+    "data": [
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very L O N G text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "very <br>L<br>O<br>N<br>G<br> text",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>horizontal</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_8_horizontal_center.json b/test/image/mocks/uniformtext_pie_8_horizontal_center.json
new file mode 100644
index 00000000000..b503a427e0d
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_8_horizontal_center.json
@@ -0,0 +1,200 @@
+{
+    "data": [
+        {
+            "rotation": -360,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.05,
+                    0.25
+                ],
+                "y": [
+                    0,
+                    0.45
+                ]
+            }
+        },
+        {
+            "rotation": -360,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.3,
+                    0.5
+                ],
+                "y": [
+                    0,
+                    0.45
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.05,
+                    0.25
+                ],
+                "y": [
+                    0.5,
+                    0.95
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.3,
+                    0.5
+                ],
+                "y": [
+                    0.5,
+                    0.95
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.55,
+                    0.75
+                ],
+                "y": [
+                    0,
+                    0.45
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.8,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.45
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.55,
+                    0.75
+                ],
+                "y": [
+                    0.5,
+                    0.95
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                4,
+                1,
+                0.25
+            ],
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "textposition": "auto",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.8,
+                    1
+                ],
+                "y": [
+                    0.5,
+                    0.95
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>horizontal</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_8_radial.json b/test/image/mocks/uniformtext_pie_8_radial.json
new file mode 100644
index 00000000000..037c522214e
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_8_radial.json
@@ -0,0 +1,248 @@
+{
+    "data": [
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>radial</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_8_tangential.json b/test/image/mocks/uniformtext_pie_8_tangential.json
new file mode 100644
index 00000000000..3490e845771
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_8_tangential.json
@@ -0,0 +1,248 @@
+{
+    "data": [
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -360,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0,
+                    0.24
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 180,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.25,
+                    0.49
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": -270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0,
+                    0.49
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L O N G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.5,
+                    0.74
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        },
+        {
+            "rotation": 270,
+            "values": [
+                7,
+                0.9,
+                0.1
+            ],
+            "text": [
+                "L<br>O<br>N<br>G",
+                "text",
+                "invisible"
+            ],
+            "type": "pie",
+            "textinfo": "text",
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "hole": 0.5,
+            "domain": {
+                "x": [
+                    0.75,
+                    0.99
+                ],
+                "y": [
+                    0.5,
+                    0.99
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 500,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "orientation": "h",
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>tangential</i> orientation<br>minsize=8"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_inside-text-orientation.json b/test/image/mocks/uniformtext_pie_inside-text-orientation.json
new file mode 100644
index 00000000000..aa0d8c20b5f
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_inside-text-orientation.json
@@ -0,0 +1,375 @@
+{
+    "data": [
+        {
+            "name": "horizontal",
+            "title": {
+                "text": "horizontal",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "horizontal",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "marker": {
+                "colors": [
+                    "aquamarine",
+                    "brown",
+                    "chocolate",
+                    "darkblue",
+                    "darkgreen",
+                    "forestgreen",
+                    "gold",
+                    "honeydew",
+                    "indigo",
+                    "navajowhite",
+                    "khaki",
+                    "lightblue",
+                    "magenta",
+                    "navy",
+                    "orange",
+                    "pink",
+                    "aqua",
+                    "red",
+                    "silver",
+                    "tomato",
+                    "turquoise",
+                    "violet",
+                    "wheat",
+                    "yellow",
+                    "azure"
+                ]
+            },
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.52,
+                    1
+                ],
+                "y": [
+                    0.52,
+                    1
+                ]
+            }
+        },
+        {
+            "name": "radial",
+            "title": {
+                "text": "radial",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "radial",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.52,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.48
+                ]
+            }
+        },
+        {
+            "name": "tangential",
+            "title": {
+                "text": "tangential",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "tangential",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.48
+                ],
+                "y": [
+                    0,
+                    0.48
+                ]
+            }
+        },
+        {
+            "name": "auto",
+            "title": {
+                "text": "auto",
+                "font": {
+                    "size": 20
+                }
+            },
+            "insidetextorientation": "auto",
+            "textposition": "inside",
+            "type": "pie",
+            "hole": 0.5,
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "values": [
+                26,
+                25,
+                24,
+                23,
+                22,
+                21,
+                20,
+                19,
+                18,
+                17,
+                16,
+                15,
+                14,
+                13,
+                12,
+                11,
+                10,
+                9,
+                8,
+                7,
+                6,
+                5,
+                4,
+                3,
+                2,
+                1
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.48
+                ],
+                "y": [
+                    0.52,
+                    1
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 925,
+        "height": 750,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "title": {
+                "text": "<b>inside text orientation</b>"
+            }
+        },
+        "font": {
+            "size": 14
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 9
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_pie_outside.json b/test/image/mocks/uniformtext_pie_outside.json
new file mode 100644
index 00000000000..8060f23908e
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_outside.json
@@ -0,0 +1,81 @@
+{
+  "data": [
+    {
+      "values": [
+        3,
+        1,
+        5,
+        2,
+        4
+      ],
+      "type": "pie",
+      "domain": {
+        "x": [0, 0.4],
+        "y": [0.6, 1]
+      },
+      "sort": true,
+      "direction": "counterclockwise",
+      "name": "sorted ccw (default)"
+    },
+    {
+      "values": [
+        3,
+        1,
+        5,
+        2,
+        4
+      ],
+      "type": "pie",
+      "domain": {
+        "x": [0.6, 1],
+        "y": [0.6, 1]
+      },
+      "sort": true,
+      "direction": "clockwise",
+      "name": "sorted cw"
+    },
+    {
+      "values": [
+        3,
+        1,
+        5,
+        2,
+        4
+      ],
+      "type": "pie",
+      "domain": {
+        "x": [0, 0.4],
+        "y": [0, 0.4]
+      },
+      "sort": false,
+      "direction": "counterclockwise",
+      "name": "unsorted ccw"
+    },
+    {
+      "values": [
+        3,
+        1,
+        5,
+        2,
+        4
+      ],
+      "type": "pie",
+      "domain": {
+        "x": [0.6, 1],
+        "y": [0, 0.4]
+      },
+      "sort": false,
+      "direction": "clockwise",
+      "name": "unsorted cw"
+    }
+  ],
+  "layout": {
+    "height": 500,
+    "width": 600,
+    "uniformtext": {
+        "mode": "hide",
+        "minsize": 16
+    },
+    "showlegend": false
+  }
+}
diff --git a/test/image/mocks/uniformtext_pie_pull.json b/test/image/mocks/uniformtext_pie_pull.json
new file mode 100644
index 00000000000..9ed3c6e508a
--- /dev/null
+++ b/test/image/mocks/uniformtext_pie_pull.json
@@ -0,0 +1,135 @@
+{
+    "data": [
+        {
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "hole": 0.25,
+            "domain": {
+                "y": [
+                    0.5,
+                    1
+                ]
+            },
+            "sort": false,
+            "labels": [
+                1,
+                2,
+                3,
+                4,
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            ],
+            "values": [
+                1,
+                2,
+                3,
+                4,
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            ],
+            "pull": [
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5
+            ],
+            "textposition": "inside",
+            "textinfo": "value"
+        },
+        {
+            "type": "pie",
+            "insidetextorientation": "horizontal",
+            "hole": 0.25,
+            "domain": {
+                "y": [
+                    0,
+                    0.5
+                ]
+            },
+            "sort": false,
+            "labels": [
+                1,
+                2,
+                3,
+                4,
+                5,
+                6,
+                7,
+                8,
+                9,
+                10,
+                11,
+                12
+            ],
+            "text": [
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice",
+                "slice"
+            ],
+            "pull": [
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5,
+                0,
+                0.5
+            ],
+            "textposition": "inside",
+            "textinfo": "text"
+        }
+    ],
+    "layout": {
+        "width": 600,
+        "height": 900,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "legend": {
+            "title": {
+                "text": "<b>pie uniform text</b><br>with <i>horizontal</i> orientation<br>minsize=20"
+            }
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 20
+        }
+    }
+}
diff --git a/test/image/mocks/uniformtext_sunburst_inside-text-orientation.json b/test/image/mocks/uniformtext_sunburst_inside-text-orientation.json
new file mode 100644
index 00000000000..33bb7a4da9e
--- /dev/null
+++ b/test/image/mocks/uniformtext_sunburst_inside-text-orientation.json
@@ -0,0 +1,433 @@
+{
+    "data": [
+        {
+            "name": "horizontal",
+            "insidetextorientation": "horizontal",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "marker": {
+                "colors": [
+                    "aquamarine",
+                    "brown",
+                    "chocolate",
+                    "darkblue",
+                    "darkgreen",
+                    "forestgreen",
+                    "gold",
+                    "honeydew",
+                    "indigo",
+                    "navajowhite",
+                    "khaki",
+                    "lightblue",
+                    "magenta",
+                    "navy",
+                    "orange",
+                    "pink",
+                    "aqua",
+                    "red",
+                    "silver",
+                    "tomato",
+                    "turquoise",
+                    "violet",
+                    "wheat",
+                    "yellow",
+                    "azure"
+                ]
+            },
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        },
+        {
+            "name": "radial",
+            "insidetextorientation": "radial",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0.5,
+                    1
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "tangential",
+            "insidetextorientation": "tangential",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0,
+                    0.5
+                ]
+            }
+        },
+        {
+            "name": "auto",
+            "insidetextorientation": "auto",
+            "type": "sunburst",
+            "level": "Juliet",
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ],
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "textinfo": "label+value",
+            "domain": {
+                "x": [
+                    0,
+                    0.5
+                ],
+                "y": [
+                    0.5,
+                    1
+                ]
+            }
+        }
+    ],
+    "layout": {
+        "width": 800,
+        "height": 800,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "font": {
+            "size": 14
+        },
+        "uniformtext": {
+            "mode": "hide"
+        },
+        "shapes": [
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0,
+                "y1": 0.5
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0.5,
+                "x1": 1,
+                "y0": 0.5,
+                "y1": 1
+            },
+            {
+                "type": "rect",
+                "layer": "below",
+                "x0": 0,
+                "x1": 0.5,
+                "y0": 0.5,
+                "y1": 1
+            }
+        ],
+        "annotations": [
+            {
+                "text": "auto",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "tangential",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 0.5,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "radial",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0,
+                "font": {
+                    "size": 20
+                }
+            },
+            {
+                "text": "horizontal",
+                "showarrow": false,
+                "xref": "paper",
+                "yref": "paper",
+                "xanchor": "right",
+                "yanchor": "bottom",
+                "x": 1,
+                "y": 0.5,
+                "font": {
+                    "size": 20
+                }
+            }
+        ]
+    }
+}
diff --git a/test/image/mocks/uniformtext_sunburst_treemap.json b/test/image/mocks/uniformtext_sunburst_treemap.json
new file mode 100644
index 00000000000..d39af521b92
--- /dev/null
+++ b/test/image/mocks/uniformtext_sunburst_treemap.json
@@ -0,0 +1,166 @@
+{
+	"data": [
+		{
+            "type": "sunburst",
+            "insidetextorientation": "horizontal",
+            "domain": {
+                "y": [0.5, 1]
+            },
+            "count": "leaves+branches",
+			"textinfo": "label",
+			"marker": {
+				"line": {
+					"color": "#777"
+				},
+                "colorscale": "Blackbody",
+                "reversescale": true,
+				"showscale": false
+			},
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ]
+        },
+		{
+            "type": "treemap",
+            "domain": {
+                "y": [0, 0.5]
+            },
+            "count": "leaves+branches",
+			"textinfo": "label",
+			"marker": {
+				"line": {
+					"color": "#777"
+				},
+                "colorscale": "Blackbody",
+                "reversescale": true,
+				"showscale": false
+            },
+            "level": "Juliet",
+            "labels": [
+                "Alpha",
+                "Bravo",
+                "Charlie",
+                "Delta",
+                "Echo",
+                "Foxtrot",
+                "Golf",
+                "Hotel",
+                "India",
+                "Juliet",
+                "Kilo",
+                "Lima",
+                "Mike",
+                "November",
+                "Oscar",
+                "Papa",
+                "Quebec",
+                "Romeo",
+                "Sierra",
+                "Tango",
+                "Uniform",
+                "Victor",
+                "Whiskey",
+                "X ray",
+                "Yankee",
+                "Zulu"
+            ],
+            "parents": [
+                "",
+                "Alpha",
+                "Alpha",
+                "Charlie",
+                "Charlie",
+                "Charlie",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Foxtrot",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Juliet",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Oscar",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform",
+                "Uniform"
+            ]
+		}
+	],
+	"layout": {
+		"width": 500,
+        "height": 1000,
+        "margin": {
+            "t": 10,
+            "b": 10,
+            "l": 10,
+            "r": 10
+        },
+        "uniformtext": {
+            "mode": "hide",
+            "minsize": 8
+        }
+	}
+}
diff --git a/test/jasmine/tests/bar_test.js b/test/jasmine/tests/bar_test.js
index 3fab8efd6cc..fbf81926472 100644
--- a/test/jasmine/tests/bar_test.js
+++ b/test/jasmine/tests/bar_test.js
@@ -2787,3 +2787,123 @@ describe('bar tweening', function() {
             .then(done);
     });
 });
+
+describe('bar uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(BAR_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'bar',
+                orientation: 'h',
+                x: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+
+                // no text element would be created for null and empty string
+                text: [
+                    'long lablel',
+                    '$',
+                    '=',
+                    '|',
+                    '.',
+                    ' ',
+                    '',
+                    null,
+                    '<br>',
+                    0
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                textangle: 0
+            }],
+            layout: {
+                width: 500,
+                height: 500
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.48, 1, 1, 1, 1, 1, 1],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.48, 0.48, 0.48, 0.48, 0.48, 0.48, 0.48],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0, 0.48, 0.48, 0.48, 0.48, 0.48, 0.48],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0, 0, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 14; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 14', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0, 0.36, 0.36, 0.36, 0.36, 0.36, 0.36],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0.36, 0.36, 0.36, 0.36, 0.36, 0.36, 0.36],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/funnel_test.js b/test/jasmine/tests/funnel_test.js
index 9a26e14fcb6..bc5603ab6bb 100644
--- a/test/jasmine/tests/funnel_test.js
+++ b/test/jasmine/tests/funnel_test.js
@@ -1610,3 +1610,122 @@ function assertTraceField(calcData, prop, expectation) {
 
     expect(values).toBeCloseToArray(expectation, undefined, '(field ' + prop + ')');
 }
+
+describe('funnel uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(FUNNEL_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'funnel',
+                orientation: 'h',
+                x: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+
+                text: [
+                    'long lablel',
+                    '$',
+                    '=',
+                    '|',
+                    '.',
+                    ' ',
+                    '',
+                    null,
+                    '<br>',
+                    0
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                textangle: 0
+            }],
+            layout: {
+                width: 500,
+                height: 500
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.44, 1, 1, 1, 1, 1, 1],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0, 0, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 14; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 14', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0, 0.33, 0.33, 0.33, 0.33, 0.33, 0.33],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0.33, 0.33, 0.33, 0.33, 0.33, 0.33, 0.33],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/funnelarea_test.js b/test/jasmine/tests/funnelarea_test.js
index 67e2fa6a015..ac6ef54bd10 100644
--- a/test/jasmine/tests/funnelarea_test.js
+++ b/test/jasmine/tests/funnelarea_test.js
@@ -1711,3 +1711,124 @@ describe('Test funnelarea calculated areas with scalegroup on various domain rat
         });
     });
 });
+
+describe('funnelarea uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'funnelarea',
+                baseratio: 1,
+                labels: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+                values: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+                sort: false,
+
+                text: [
+                    0,
+                    '<br>',
+                    null,
+                    '',
+                    ' ',
+                    '.',
+                    '|',
+                    '=',
+                    'longest word in German',
+                    'Rindfleischetikettierungsueberwachungsaufgabenuebertragungsgesetz'
+                ],
+
+                textinfo: 'text',
+                textangle: 0,
+                showlegend: false
+            }],
+            layout: {
+                width: 450,
+                height: 450
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [1, 1, 1, 1, 1, 1, 1, 0.69],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.69, 0.69, 0.69, 0.69, 0.69, 0.69, 0.69, 0.69],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.69, 0.69, 0.69, 0.69, 0.69, 0.69, 0.69, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0.26, 0, 0, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 13; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 13', {
+            fontsizes: [13, 13, 13, 13, 13, 13, 13, 13],
+            scales: [0.64, 0.64, 0.64, 0.64, 0.64, 0.64, 0.64, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [13, 13, 13, 13, 13, 13, 13, 13],
+            scales: [0.64, 0.64, 0.64, 0.64, 0.64, 0.64, 0.64, 0.64],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/pie_test.js b/test/jasmine/tests/pie_test.js
index b8303f19897..668f1e42832 100644
--- a/test/jasmine/tests/pie_test.js
+++ b/test/jasmine/tests/pie_test.js
@@ -86,6 +86,29 @@ describe('Pie defaults', function() {
         var out4 = _supply({type: 'pie', labels: ['A', 'B'], values: [1, 2], automargin: true, textposition: 'outside'});
         expect(out4.automargin).toBe(true, 'textposition outside');
     });
+
+    it('should not coerce *insidetextorientation* if `textposition` is *outside* or *none*', function() {
+        var out = _supply({type: 'pie', labels: ['A', 'B'], values: [1, 2], textposition: 'none'});
+        expect(out.insidetextorientation).toBe(undefined, 'textposition none');
+
+        var out2 = _supply({type: 'pie', labels: ['A', 'B'], values: [1, 2], textposition: 'outside'});
+        expect(out2.insidetextorientation).toBe(undefined, 'textposition outside');
+    });
+
+    it('should coerce *insidetextorientation* if `textposition` is *inside* or *auto*', function() {
+        var out = _supply({type: 'pie', labels: ['A', 'B'], values: [1, 2], textposition: 'auto'});
+        expect(out.insidetextorientation).toBe('auto', 'textposition auto');
+
+        var out2 = _supply({type: 'pie', labels: ['A', 'B'], values: [1, 2], textposition: 'inside'});
+        expect(out2.insidetextorientation).toBe('auto', 'textposition inside');
+    });
+
+    it('should coerce *insidetextorientation* if `textposition` is an array', function() {
+        var out = _supply({type: 'pie', labels: ['A', 'B', 'C', 'D', 'E', 'F'], values: [1, 2, 3, 4, 5, 6],
+            textposition: [null, '', 'none', 'auto', 'inside', 'outside']
+        });
+        expect(out.insidetextorientation).toBe('auto', 'textposition auto');
+    });
 });
 
 describe('Pie traces', function() {
@@ -1774,3 +1797,219 @@ describe('Test pie interactions edge cases:', function() {
         .then(done);
     });
 });
+
+describe('pie inside text orientation', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextRotations(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['rotations'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('rotate(');
+                var rotate = 0;
+                if(pos0 !== -1) {
+                    pos0 += 'rotate('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    rotate = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.rotations[i]).toBeCloseTo(rotate, -1, 'rotation for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react to new insidetextorientation option', function(done) {
+        var fig = {
+            data: [{
+                type: 'pie',
+                labels: [64, 32, 16, 8],
+                values: [64, 32, 16, 8],
+                sort: false,
+
+                text: [
+                    'very long label',
+                    'label',
+                    'long label',
+                    '+'
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                showlegend: false
+            }],
+            layout: {
+                width: 300,
+                height: 300
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextRotations('using default "auto"', {
+            rotations: [-84, 0, -30, 0]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'horizontal';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "horizontal"', {
+            rotations: [0, 0, 0, 0]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'radial';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "radial"', {
+            rotations: [0, 42, -30, -66]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'tangential';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "tangential"', {
+            rotations: [-84, -48, 60, 24]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'auto';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('back to "auto"', {
+            rotations: [-84, 0, -30, 0]
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
+
+describe('pie uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'pie',
+                labels: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+                values: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+                sort: false,
+
+                text: [
+                    0,
+                    '<br>',
+                    null,
+                    '',
+                    ' ',
+                    '.',
+                    '+',
+                    '=',
+                    '$',
+                    'very long lablel'
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                showlegend: false
+            }],
+            layout: {
+                width: 300,
+                height: 300
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [1, 1, 1, 1, 1, 1, 1, 0.58],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0.22, 0.22, 0.22, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 16; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 16', {
+            fontsizes: [16, 16, 16, 16, 16, 16, 16, 16],
+            scales: [0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [16, 16, 16, 16, 16, 16, 16, 16],
+            scales: [0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/plots_test.js b/test/jasmine/tests/plots_test.js
index 8c3c3388fed..6669a31a2c0 100644
--- a/test/jasmine/tests/plots_test.js
+++ b/test/jasmine/tests/plots_test.js
@@ -13,6 +13,12 @@ describe('Test Plots', function() {
     'use strict';
 
     describe('Plots.supplyDefaults', function() {
+        it('should not coerce `minsize` when `uniformtext.mode` is *false*', function() {
+            var gd = {};
+            supplyAllDefaults(gd);
+            expect(gd._fullLayout.uniformtext.minsize).toBe(undefined);
+        });
+
         it('should not accept ranges where the end is not greater than the start', function() {
             var gd = {
                 data: [{
diff --git a/test/jasmine/tests/sunburst_test.js b/test/jasmine/tests/sunburst_test.js
index 64771bb0e38..b46033f7dbb 100644
--- a/test/jasmine/tests/sunburst_test.js
+++ b/test/jasmine/tests/sunburst_test.js
@@ -1,6 +1,7 @@
 var Plotly = require('@lib');
 var Plots = require('@src/plots/plots');
 var Lib = require('@src/lib');
+var Drawing = require('@src/components/drawing');
 var constants = require('@src/traces/sunburst/constants');
 
 var d3 = require('d3');
@@ -16,6 +17,8 @@ var assertHoverLabelStyle = customAssertions.assertHoverLabelStyle;
 var assertHoverLabelContent = customAssertions.assertHoverLabelContent;
 var checkTextTemplate = require('../assets/check_texttemplate');
 
+var SLICES_TEXT_SELECTOR = '.sunburstlayer text.slicetext';
+
 function _mouseEvent(type, gd, v) {
     return function() {
         if(Array.isArray(v)) {
@@ -1066,7 +1069,7 @@ describe('Test sunburst restyle:', function() {
         .then(done);
     });
 
-    it('should be able to restyle *textinfo*', function(done) {
+    it('should be able to restyle *textinfo* with various *insidetextorientation*', function(done) {
         var mock = {
             data: [{
                 type: 'sunburst',
@@ -1120,6 +1123,27 @@ describe('Test sunburst restyle:', function() {
         .then(_assert('show everything', ['Root\n0\nnode0', 'B\n2\nnode2', 'A\n1\nnode1', 'b\n3\nnode3']))
         .then(_restyle({textinfo: null}))
         .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        // now change insidetextorientation to 'horizontal'
+        .then(_restyle({insidetextorientation: 'horizontal'}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        .then(_restyle({textinfo: 'none'}))
+        .then(_assert('no textinfo', ['', '', '', '']))
+        .then(_restyle({textinfo: null}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        // now change insidetextorientation to 'tangential'
+        .then(_restyle({insidetextorientation: 'tangential'}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        .then(_restyle({textinfo: 'none'}))
+        .then(_assert('no textinfo', ['', '', '', '']))
+        .then(_restyle({textinfo: null}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        // now change insidetextorientation to 'radial'
+        .then(_restyle({insidetextorientation: 'radial'}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
+        .then(_restyle({textinfo: 'none'}))
+        .then(_assert('no textinfo', ['', '', '', '']))
+        .then(_restyle({textinfo: null}))
+        .then(_assert('back to dflt', ['Root\nnode0', 'B\nnode2', 'A\nnode1', 'b\nnode3']))
         .catch(failTest)
         .then(done);
     });
@@ -1163,25 +1187,25 @@ describe('Test sunburst tweening:', function() {
         return s.replace(/\s/g, '');
     }
 
-    function _assert(msg, attrName, id, exp) {
+    function _assert(msg, attrName, id, exp, tolerance) {
         var lookup = {d: pathTweenFnLookup, transform: textTweenFnLookup}[attrName];
         var fn = lookup[id];
         // normalize time in [0, 1] where we'll assert the tweening fn output,
         // asserting at the mid point *should be* representative enough
         var t = 0.5;
         var actual = trim(fn(t));
+        var msg2 = msg + ' | node ' + id + ' @t=' + t;
 
-        // do not assert textBB translate piece,
-        // which isn't tweened and has OS-dependent results
         if(attrName === 'transform') {
-            actual = actual.split('translate').slice(0, 2).join('translate');
-        }
-
+            var fake = {attr: function() { return actual; }};
+            var xy = Drawing.getTranslate(fake);
+            expect([xy.x, xy.y]).toBeWithinArray(exp, tolerance || 2, msg2);
+        } else {
         // we could maybe to bring in:
         // https://github.com/hughsk/svg-path-parser
         // to make these assertions more readable
-
-        expect(actual).toBe(trim(exp), msg + ' | node ' + id + ' @t=' + t);
+            expect(actual).toBe(trim(exp), msg2);
+        }
     }
 
     it('should tween sector exit/update (case: click on branch, no maxdepth)', function(done) {
@@ -1211,12 +1235,8 @@ describe('Test sunburst tweening:', function() {
                 'M350,156.25 L350,100 A135,1350,1,0485,235.00000000000003 L428.75,235.00000000000003' +
                 'A78.75,78.750,1,1350,156.25Z'
             );
-            _assert('move B text to new position', 'transform', 'B',
-                'translate(313.45694251914836,271.54305748085164)'
-            );
-            _assert('move b text to new position', 'transform', 'b',
-                'translate(274.4279627606877,310.57203723931224)'
-            );
+            _assert('move B text to new position', 'transform', 'B', [313.45, 275.54]);
+            _assert('move b text to new position', 'transform', 'b', [274.42, 314.57]);
         })
         .catch(failTest)
         .then(done);
@@ -1250,12 +1270,8 @@ describe('Test sunburst tweening:', function() {
                 'M350,156.25 L350,100 A135,1350,1,0485,235.00000000000003 L428.75,235.00000000000003' +
                 'A78.75,78.750,1,1350,156.25Z'
             );
-            _assert('move B text to new position', 'transform', 'B',
-                'translate(316.8522926358638,268.1477073641362)'
-            );
-            _assert('move b text to new position', 'transform', 'b',
-                'translate(274.4279627606877,310.57203723931224)'
-            );
+            _assert('move B text to new position', 'transform', 'B', [316.85, 272.14]);
+            _assert('move b text to new position', 'transform', 'b', [274.42, 314.57]);
         })
         .catch(failTest)
         .then(done);
@@ -1288,12 +1304,8 @@ describe('Test sunburst tweening:', function() {
             _assert('enter b for parent position', 'd', 'b',
                 'M350,133.75 L350,100 A135,1350,0,0350,370 L350,336.25 A101.25,101.250,0,1350,133.75Z'
             );
-            _assert('move B text to new position', 'transform', 'B',
-                'translate(303.0160689531907,281.9839310468093)'
-            );
-            _assert('enter b text to new position', 'transform', 'b',
-                'translate(248.75,235)'
-            );
+            _assert('move B text to new position', 'transform', 'B', [303.01, 285.98]);
+            _assert('enter b text to new position', 'transform', 'b', [248.75, 239]);
         })
         .catch(failTest)
         .then(done);
@@ -1362,6 +1374,178 @@ describe('Test sunburst tweening:', function() {
         .then(done);
     });
     */
+
+    it('should update text position during transition using *auto* insidetextorientation', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'auto'
+            }]
+        })
+        .then(_run(gd, 4))
+        .then(function() {
+            _assert('move J text to new position', 'transform', 'J', [309.3085305481173, 202.66937078300114]);
+            _assert('move O text to new position', 'transform', 'O', [337.158534264498, 162.57550532369754], 5);
+            _assert('move U text to new position', 'transform', 'U', [416.1153793700712, 163.4078137147134]);
+            _assert('move V text to new position', 'transform', 'V', [471.63745793297295, 218.00377184475153]);
+            _assert('move W text to new position', 'transform', 'W', [455.10235209157037, 177.717459723826], 5);
+            _assert('move X text to new position', 'transform', 'X', [431.0320488371527, 145.88885474402548]);
+            _assert('move Y text to new position', 'transform', 'Y', [395.12660928295867, 124.11350635624726]);
+            _assert('move Z text to new position', 'transform', 'Z', [354.1550374068844, 115.63596810986363]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *horizontal* insidetextorientation', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'horizontal'
+            }]
+        })
+        .then(_run(gd, 4))
+        .then(function() {
+            _assert('move J text to new position', 'transform', 'J', [350, 185.9244172266002]);
+            _assert('move O text to new position', 'transform', 'O', [350.1640625, 162.2952497427013]);
+            _assert('move U text to new position', 'transform', 'U', [416.1153793700712, 163.4078137147134]);
+            _assert('move V text to new position', 'transform', 'V', [471.63745793297295, 218.00377184475153]);
+            _assert('move W text to new position', 'transform', 'W', [457.21539566810236, 178.44157384259557]);
+            _assert('move X text to new position', 'transform', 'X', [431.0320488371527, 145.88885474402548]);
+            _assert('move Y text to new position', 'transform', 'Y', [395.12660928295867, 124.11350635624726]);
+            _assert('move Z text to new position', 'transform', 'Z', [354.1550374068844, 115.63596810986363]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *tangential* insidetextorientation', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'tangential'
+            }]
+        })
+        .then(_run(gd, 4))
+        .then(function() {
+            _assert('move J text to new position', 'transform', 'J', [350, 185.9244172266002]);
+            _assert('move O text to new position', 'transform', 'O', [350.1640625, 162.3617907020963]);
+            _assert('move U text to new position', 'transform', 'U', [387.0665312800944, 146.39132446549587]);
+            _assert('move V text to new position', 'transform', 'V', [467.5637172232141, 214.71357776223093]);
+            _assert('move W text to new position', 'transform', 'W', [453.6883022471187, 176.23118240799604]);
+            _assert('move X text to new position', 'transform', 'X', [428.32070483274055, 145.007590714263]);
+            _assert('move Y text to new position', 'transform', 'Y', [393.6173101979463, 123.958130483835]);
+            _assert('move Z text to new position', 'transform', 'Z', [359.52567880729003, 116.05583257124167]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *radial* insidetextorientation', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'radial'
+            }]
+        })
+        .then(_run(gd, 4))
+        .then(function() {
+            _assert('move J text to new position', 'transform', 'J', [298.18238454231454, 239]);
+            _assert('move O text to new position', 'transform', 'O', [299.00421744782363, 183.7721980352468]);
+            _assert('move U text to new position', 'transform', 'U', [418.6530444037927, 162.19895218157865]);
+            _assert('move V text to new position', 'transform', 'V', [471.8671910181962, 218.0219264868202]);
+            _assert('move W text to new position', 'transform', 'W', [459.0093083790858, 178.21113754411613]);
+            _assert('move X text to new position', 'transform', 'X', [433.74669513154777, 144.8536840385141]);
+            _assert('move Y text to new position', 'transform', 'Y', [398.67767996405655, 121.9940236084775]);
+            _assert('move Z text to new position', 'transform', 'Z', [354.00770212095256, 116.19286557341015]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *radial* insidetextorientation with level', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'radial',
+                level: 'O',
+            }]
+        })
+        .then(_run(gd, 2))
+        .then(function() {
+            _assert('move U text to new position', 'transform', 'U', [317.71031126211744, 202.23522389350774]);
+            _assert('move V text to new position', 'transform', 'V', [444.88381073744586, 191.14358863479603]);
+            _assert('move W text to new position', 'transform', 'W', [365.5485731154604, 134.6827081871288]);
+            _assert('move X text to new position', 'transform', 'X', [277.7815763779703, 162.7705278345142]);
+            _assert('move Y text to new position', 'transform', 'Y', [247.47466543373307, 255.288278237516]);
+            _assert('move Z text to new position', 'transform', 'Z', [300.75324430542196, 332.0135787956955]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *tangential* insidetextorientation with level', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'tangential',
+                level: 'O',
+            }]
+        })
+        .then(_run(gd, 2))
+        .then(function() {
+            _assert('move U text to new position', 'transform', 'U', [313.79288001914836, 202.45694251914836]);
+            _assert('move V text to new position', 'transform', 'V', [441.011030377721, 188.63633201157208]);
+            _assert('move W text to new position', 'transform', 'W', [382.1346244328249, 135.0126788235936], 5);
+            _assert('move X text to new position', 'transform', 'X', [277.7815763779703, 162.7705278345142]);
+            _assert('move Y text to new position', 'transform', 'Y', [249.73412124927503, 271.78420776316403]);
+            _assert('move Z text to new position', 'transform', 'Z', [305.39156336654094, 331.3597434293286]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
+
+    it('should update text position during transition using *horizontal* insidetextorientation with level', function(done) {
+        Plotly.plot(gd, {
+            data: [{
+                type: 'sunburst',
+                textinfo: 'label',
+                labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'],
+                parents: ['', 'A', 'A', 'C', 'C', 'C', 'F', 'F', 'F', 'F', 'J', 'J', 'J', 'J', 'J', 'O', 'O', 'O', 'O', 'O', 'O', 'U', 'U', 'U', 'U', 'U', 'U'],
+                insidetextorientation: 'horizontal',
+                level: 'O',
+            }]
+        })
+        .then(_run(gd, 2))
+        .then(function() {
+            _assert('move U text to new position', 'transform', 'U', [313.79288001914836, 202.45694251914836]);
+            _assert('move V text to new position', 'transform', 'V', [445.2341347726318, 190.47976534033592]);
+            _assert('move W text to new position', 'transform', 'W', [366.3829959511747, 133.44080859889465]);
+            _assert('move X text to new position', 'transform', 'X', [274.43577526068776, 163.42796276068773]);
+            _assert('move Y text to new position', 'transform', 'Y', [244.44862109889465, 255.71893345117468]);
+            _assert('move Z text to new position', 'transform', 'Z', [301.6438278403359, 334.2263222726318]);
+        })
+        .catch(failTest)
+        .then(done);
+    });
 });
 
 describe('Test sunburst interactions edge cases', function() {
@@ -1693,3 +1877,218 @@ describe('Test sunburst texttemplate with *remainder* `values` should work when
         ['%{percentParent} of %{parent}', ['20% of Eve', '42% of Seth', '8% of Seth']],
     ], /* skipEtra */ true);
 });
+
+describe('sunburst inside text orientation', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextRotations(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['rotations'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('rotate(');
+                var rotate = 0;
+                if(pos0 !== -1) {
+                    pos0 += 'rotate('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    rotate = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.rotations[i]).toBeCloseTo(rotate, -1, 'rotation for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react to new insidetextorientation option', function(done) {
+        var fig = {
+            data: [{
+                type: 'sunburst',
+                parents: ['', '', '', ''],
+                labels: [64, 32, 16, 8],
+                values: [64, 32, 16, 8],
+                sort: false,
+
+                text: [
+                    'very long label',
+                    'label',
+                    'long label',
+                    '+'
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                showlegend: false
+            }],
+            layout: {
+                width: 300,
+                height: 300
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextRotations('using default "auto"', {
+            rotations: [-0.6, 0, 48, 0]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'horizontal';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "horizontal"', {
+            rotations: [0, 0, 0, 0]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'radial';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "radial"', {
+            rotations: [84, -60, 48, 12]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'tangential';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('using "tangential"', {
+            rotations: [0, 0, -42, -78]
+        }))
+        .then(function() {
+            fig.data[0].insidetextorientation = 'auto';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextRotations('back to "auto"', {
+            rotations: [-0.6, 0, 48, 0]
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
+
+describe('sunburst uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'sunburst',
+                parents: ['', '', '', '', '', '', '', '', '', ''],
+                labels: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+                values: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+
+                text: [
+                    0,
+                    '<br>',
+                    null,
+                    '',
+                    ' ',
+                    '.',
+                    '+',
+                    '=',
+                    '$',
+                    'very long lablel'
+                ],
+
+                textinfo: 'text'
+            }],
+            layout: {
+                width: 300,
+                height: 300
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [1, 1, 1, 1, 1, 1, 1, 1, 1, 0.58],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0.58, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0.22, 0.22, 0.22, 0.22, 0.22, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 16; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 16', {
+            fontsizes: [16, 16, 16, 16, 16, 16, 16, 16, 16, 16],
+            scales: [0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [16, 16, 16, 16, 16, 16, 16, 16, 16, 16],
+            scales: [0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44, 0.44],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/treemap_test.js b/test/jasmine/tests/treemap_test.js
index 7a613dfb309..96d89755d31 100644
--- a/test/jasmine/tests/treemap_test.js
+++ b/test/jasmine/tests/treemap_test.js
@@ -17,6 +17,8 @@ var assertHoverLabelStyle = customAssertions.assertHoverLabelStyle;
 var assertHoverLabelContent = customAssertions.assertHoverLabelContent;
 var checkTextTemplate = require('../assets/check_texttemplate');
 
+var SLICES_TEXT_SELECTOR = '.treemaplayer text.slicetext';
+
 function _mouseEvent(type, gd, v) {
     return function() {
         if(Array.isArray(v)) {
@@ -1318,7 +1320,7 @@ describe('Test treemap tweening:', function() {
     }
 
 
-    function _assert(msg, attrName, id, exp) {
+    function _assert(msg, attrName, id, exp, tolerance) {
         var lookup = {d: pathTweenFnLookup, transform: textTweenFnLookup}[attrName];
         var fn = lookup[id];
         // normalize time in [0, 1] where we'll assert the tweening fn output,
@@ -1330,7 +1332,7 @@ describe('Test treemap tweening:', function() {
         if(attrName === 'transform') {
             var fake = {attr: function() { return actual; }};
             var xy = Drawing.getTranslate(fake);
-            expect([xy.x, xy.y]).toBeWithinArray(exp, 2, msg2);
+            expect([xy.x, xy.y]).toBeWithinArray(exp, tolerance || 2, msg2);
         } else {
             // we could maybe to bring in:
             // https://github.com/hughsk/svg-path-parser
@@ -1363,8 +1365,8 @@ describe('Test treemap tweening:', function() {
             _assert('update b to new position', 'd', 'b',
                 'M221.75,136L611,136L611,361L221.75,361Z'
             );
-            _assert('move B text to new position', 'transform', 'B', [221.75126, 0]);
-            _assert('move b text to new position', 'transform', 'b', [224.75150, 0]);
+            _assert('move B text to new position', 'transform', 'B', [222.75, 126], 3);
+            _assert('move b text to new position', 'transform', 'b', [225.75, 150], 3);
         })
         .catch(failTest)
         .then(done);
@@ -1395,8 +1397,8 @@ describe('Test treemap tweening:', function() {
             _assert('update b to new position', 'd', 'b',
                 'M221.75,136L611,136L611,361L221.75,361Z'
             );
-            _assert('move B text to new position', 'transform', 'B', [221.75126, 0]);
-            _assert('move b text to new position', 'transform', 'b', [224.75150, 0]);
+            _assert('move B text to new position', 'transform', 'B', [222.75, 126], 3);
+            _assert('move b text to new position', 'transform', 'b', [225.75, 150], 3);
         })
         .catch(failTest)
         .then(done);
@@ -1427,11 +1429,8 @@ describe('Test treemap tweening:', function() {
             _assert('enter b for parent position', 'd', 'b',
                 'M284.375,188.5L548.375,188.5L548.375,308.5L284.375,308.5Z'
             );
-            _assert('move B text to new position', 'transform', 'B', [220.25126, 0]);
-
-            // TODO this node gets cleared out of viewport to some
-            // machine-dependent position - skip for now
-            // _assert('enter b text to new position', 'transform', 'b', [286.16071428571433, 35714285714286]);
+            _assert('move B text to new position', 'transform', 'B', [221.25, 126], 3);
+            _assert('enter b text to new position', 'transform', 'b', [286.63, 196.35]);
         })
         .catch(failTest)
         .then(done);
@@ -1691,3 +1690,113 @@ describe('Test treemap texttemplate with *remainder* `values` should work:', fun
         ['path: %{currentPath}', ['Eve', 'path: Eve/', 'Seth', 'path: Eve/', 'path: Eve/', 'path: Eve/Seth/', 'Awan', 'path: Eve/Seth/', 'path: Eve/Awan/']]
     ], /* skipEtra */ true);
 });
+
+describe('treemap uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(SLICES_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'treemap', tiling: { packing: 'slice' },
+                parents: ['', '', '', '', '', '', '', '', '', ''],
+                labels: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10],
+                values: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+
+                text: [
+                    0,
+                    '<br>',
+                    null,
+                    '',
+                    ' ',
+                    '.',
+                    '|',
+                    '=',
+                    'longest word in German',
+                    'Rindfleischetikettierungsueberwachungsaufgabenuebertragungsgesetz'
+                ],
+
+                textinfo: 'text'
+            }],
+            layout: {
+                width: 500,
+                height: 500
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0.84],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12],
+            scales: [0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84, 0.84],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 13; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 13', {
+            fontsizes: [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13],
+            scales: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13],
+            scales: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});
diff --git a/test/jasmine/tests/waterfall_test.js b/test/jasmine/tests/waterfall_test.js
index f9a35962863..eaeafc9c436 100644
--- a/test/jasmine/tests/waterfall_test.js
+++ b/test/jasmine/tests/waterfall_test.js
@@ -1733,3 +1733,122 @@ function assertTraceField(calcData, prop, expectation) {
 
     expect(values).toBeCloseToArray(expectation, undefined, '(field ' + prop + ')');
 }
+
+describe('waterfall uniformtext', function() {
+    'use strict';
+
+    var gd;
+
+    beforeEach(function() {
+        gd = createGraphDiv();
+    });
+
+    afterEach(destroyGraphDiv);
+
+    function assertTextSizes(msg, opts) {
+        return function() {
+            var selection = d3.selectAll(WATERFALL_TEXT_SELECTOR);
+            var size = selection.size();
+            ['fontsizes', 'scales'].forEach(function(e) {
+                expect(size).toBe(opts[e].length, 'length for ' + e + ' does not match with the number of elements');
+            });
+
+            selection.each(function(d, i) {
+                var fontSize = this.style.fontSize;
+                expect(fontSize).toBe(opts.fontsizes[i] + 'px', 'fontSize for element ' + i, msg);
+            });
+
+            for(var i = 0; i < selection[0].length; i++) {
+                var transform = selection[0][i].getAttribute('transform');
+                var pos0 = transform.indexOf('scale(');
+                var scale = 1;
+                if(pos0 !== -1) {
+                    pos0 += 'scale('.length;
+                    var pos1 = transform.indexOf(')', pos0);
+                    scale = +(transform.substring(pos0, pos1));
+                }
+
+                expect(opts.scales[i]).toBeCloseTo(scale, 1, 'scale for element ' + i, msg);
+            }
+        };
+    }
+
+    it('should be able to react with new uniform text options', function(done) {
+        var fig = {
+            data: [{
+                type: 'waterfall',
+                orientation: 'h',
+                x: [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10],
+
+                text: [
+                    'long lablel',
+                    '$',
+                    '=',
+                    '|',
+                    '.',
+                    ' ',
+                    '',
+                    null,
+                    '<br>',
+                    0
+                ],
+
+                textinfo: 'text',
+                textposition: 'inside',
+                textangle: 0
+            }],
+            layout: {
+                width: 500,
+                height: 500
+            }
+        };
+
+        Plotly.plot(gd, fig)
+        .then(assertTextSizes('without uniformtext', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.48, 1, 1, 1, 1, 1, 1],
+        }))
+        .then(function() {
+            fig.layout.uniformtext = {mode: 'hide'}; // default with minsize=0
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "hide"', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0.48, 0.48, 0.48, 0.48, 0.48, 0.48, 0.48],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 9; // set a minsize less than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 9', {
+            fontsizes: [12, 12, 12, 12, 12, 12, 12],
+            scales: [0, 0.48, 0.48, 0.48, 0.48, 0.48, 0.48],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 32; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 32', {
+            fontsizes: [32, 32, 32, 32, 32, 32, 32],
+            scales: [0, 0, 0, 0, 0, 0, 0],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.minsize = 14; // set a minsize greater than trace font size
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using minsize: 14', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0, 0.36, 0.36, 0.36, 0.36, 0.36, 0.36],
+        }))
+        .then(function() {
+            fig.layout.uniformtext.mode = 'show';
+            return Plotly.react(gd, fig);
+        })
+        .then(assertTextSizes('using mode: "show"', {
+            fontsizes: [14, 14, 14, 14, 14, 14, 14],
+            scales: [0.36, 0.36, 0.36, 0.36, 0.36, 0.36, 0.36],
+        }))
+        .catch(failTest)
+        .then(done);
+    });
+});