diff --git a/__tests__/common/filters.test.js b/__tests__/common/filters.test.js
new file mode 100644
index 000000000..5ea6f24d9
--- /dev/null
+++ b/__tests__/common/filters.test.js
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
+ * the License. A copy of the License is located at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ */
+
+var filters = require('../../lib/common/filters');
+
+describe('common', () => {
+  describe('filters', () => {
+    describe('removePrivate', () => {
+      it('should keep a regular token in for distribution', () => {
+        var regularToken = {
+          name: 'color-border',
+          value: '#1a1aed'
+        }
+
+        expect(filters["removePrivate"](regularToken)).toEqual(true);
+      });
+
+      it('should keep an unfiltered token in for distribution', () => {
+        var unfilteredToken = {
+          name: 'color-border',
+          value: '#1a1aed',
+          private: false
+        }
+
+        expect(filters["removePrivate"](unfilteredToken)).toEqual(true);
+      });
+
+
+      it('should remove a filtered token from the distribution output', () => {
+        var filteredToken = {
+          name: 'color-border',
+          value: '#1a1aed',
+          private: true
+        }
+
+        expect(filters["removePrivate"](filteredToken)).toEqual(false);
+      });
+    });
+  });
+});
diff --git a/examples/advanced/custom-filters/.gitignore b/examples/advanced/custom-filters/.gitignore
new file mode 100644
index 000000000..3e2e84b08
--- /dev/null
+++ b/examples/advanced/custom-filters/.gitignore
@@ -0,0 +1,2 @@
+build/
+node_modules/
diff --git a/examples/advanced/custom-filters/README.md b/examples/advanced/custom-filters/README.md
new file mode 100644
index 000000000..8978bb102
--- /dev/null
+++ b/examples/advanced/custom-filters/README.md
@@ -0,0 +1,99 @@
+## Filters
+
+This example shows how to use built-in and custom filters to the design tokens.
+
+Filters are functions that might remove according to some conditions a design token from the output distribution.
+
+#### Running the example
+
+First of all, set up the required dependencies running the command `npm install` in your local CLI environment (if you prefer to use *yarn* update the commands accordingly).
+
+At this point, if you want to build the tokens you can run `npm run build`. This command will generate the files in the `build` folder.
+
+#### How does it work a built-in filter?
+
+Currently StyleDictionary supports just the following built-in filters:
+
+- removePrivate
+
+You have to apply it in the `config.json` file:
+
+```
+"scss": {
+  "buildPath": "build/web/",
+  "files": [{
+    "destination": "colors.scss",
+    "filter": "removePrivate",
+    "format": "scss/variables"
+  }]
+}
+```
+
+The StyleDictionary will take care of filtering out proper design tokens from the source of truth:
+
+```
+{
+  "color": {
+    "gray": {
+      "light" : {
+        "value": "#CCCCCC",
+        "group": "color",
+        "private": true
+      },
+      "medium": {
+        "value": "#999999",
+        "group": "color"
+      },
+      "dark"  : {
+        "value": "#111111",
+        "group": "color"
+      }
+    },
+  }
+}
+```
+
+#### How does it work a custom filter?
+
+To declare a custom **filter**, you have to call the `registerFilter` method:
+
+```
+StyleDictionary.registerFilter({
+  name: 'isTextTransform',
+  matcher: function(token) {
+    return token.attributes.category === 'font' && token.value.includes['lowercase', 'uppercase]
+  }
+});
+```
+
+You have to apply it in the `config.json` file:
+
+```
+"scss": {
+  "buildPath": "build/web/",
+  "files": [{
+    "destination": "fonts.scss",
+    "filter": "isTextTransform",
+    "format": "scss/variables"
+  }]
+}
+```
+
+The StyleDictionary will take care of filtering out proper design tokens from the source of truth:
+
+```
+{
+  "fonts": {
+    "title-transform": {
+      "value": "uppercase", // included
+      "group": "font"
+    },
+    "title-size": {
+      "value": "36px", // excluded
+      "group": "font"
+    }
+  }
+}
+```
+
+More information can be found on the [documentation](https://amzn.github.io/style-dictionary/#/api?id=registerfilter).
diff --git a/examples/advanced/custom-filters/build.js b/examples/advanced/custom-filters/build.js
new file mode 100644
index 000000000..a060de86f
--- /dev/null
+++ b/examples/advanced/custom-filters/build.js
@@ -0,0 +1,27 @@
+const StyleDictionary = require('../../../index');
+
+console.log('Build started...');
+console.log('\n==============================================');
+
+
+// REGISTER THE CUSTOM FILTERS
+
+StyleDictionary.registerFilter({
+  name: 'removeBigSpacing',
+  matcher: function(token) {
+    return token.group === 'spacing' && token.value < 0.5
+  }
+});
+
+// APPLY THE CONFIGURATION
+// IMPORTANT: the registration of custom transforms
+// needs to be done _before_ applying the configuration
+const StyleDictionaryExtended = StyleDictionary.extend(__dirname + '/config.json');
+
+
+// FINALLY, BUILD ALL THE PLATFORMS
+StyleDictionaryExtended.buildAllPlatforms();
+
+
+console.log('\n==============================================');
+console.log('\nBuild completed!');
diff --git a/examples/advanced/custom-filters/config.json b/examples/advanced/custom-filters/config.json
new file mode 100644
index 000000000..a6d7f396a
--- /dev/null
+++ b/examples/advanced/custom-filters/config.json
@@ -0,0 +1,21 @@
+{
+  "source": ["tokens/**/*.json"],
+  "platforms": {
+    "web": {
+      "buildPath": "build/web/",
+      "files": [{
+        "destination": "tokens.js",
+        "filter": "removeBigSpacing",
+        "format": "javascript/es6"
+      }]
+    },
+    "scss": {
+      "buildPath": "build/web/",
+      "files": [{
+        "destination": "tokens.scss",
+        "filter": "removeBigSpacing",
+        "format": "scss/variables"
+      }]
+    }
+  }
+}
diff --git a/examples/advanced/custom-filters/package-lock.json b/examples/advanced/custom-filters/package-lock.json
new file mode 100644
index 000000000..6b85e911c
--- /dev/null
+++ b/examples/advanced/custom-filters/package-lock.json
@@ -0,0 +1,853 @@
+{
+  "name": "style-dictionary-filters",
+  "version": "1.0.0",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "style-dictionary-filters",
+      "version": "1.0.0",
+      "license": "Apache-2.0"
+    },
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+        "concat-map": "0.0.1"
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+      "dev": true,
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+      "dev": true,
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+      "dev": true,
+      "dependencies": {
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+        "supports-color": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/chalk?sponsor=1"
+      }
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+        "jsonfile": "^4.0.0",
+        "universalify": "^0.1.0"
+      },
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+      },
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+      "integrity": "sha512-uWlGT3YSnK9x3BQJaOdcZwrnV6hPpd8jFH1/ucpiLRPh/2zCVJKS19E4GvYHvaCcACn3foXZ0cLB9Wrx1KGe5g==",
+      "dev": true,
+      "requires": {
+        "no-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
+    "path-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/path-case/-/path-case-3.0.4.tgz",
+      "integrity": "sha512-qO4qCFjXqVTrcbPt/hQfhTQ+VhFsqNKOPtytgNKkKxSoEp3XPUQ8ObFuePylOIok5gjn69ry8XiULxCwot3Wfg==",
+      "dev": true,
+      "requires": {
+        "dot-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
+    "path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha1-F0uSaHNVNP+8es5r9TpanhtcX18=",
+      "dev": true
+    },
+    "sentence-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/sentence-case/-/sentence-case-3.0.4.tgz",
+      "integrity": "sha512-8LS0JInaQMCRoQ7YUytAo/xUu5W2XnQxV2HI/6uM6U7CITS1RqPElr30V6uIqyMKM9lJGRVFy5/4CuzcixNYSg==",
+      "dev": true,
+      "requires": {
+        "no-case": "^3.0.4",
+        "tslib": "^2.0.3",
+        "upper-case-first": "^2.0.2"
+      }
+    },
+    "snake-case": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/snake-case/-/snake-case-3.0.4.tgz",
+      "integrity": "sha512-LAOh4z89bGQvl9pFfNF8V146i7o7/CqFPbqzYgP+yYzDIDeS9HaNFtXABamRW+AQzEVODcvE79ljJ+8a9YSdMg==",
+      "dev": true,
+      "requires": {
+        "dot-case": "^3.0.4",
+        "tslib": "^2.0.3"
+      }
+    },
+    "style-dictionary": {
+      "version": "https://registry.npmjs.org/style-dictionary/-/style-dictionary-3.1.1.tgz",
+      "integrity": "sha512-Dpugx2wH3ElMvq1GOaSsfUChr8dwujx2/eBUUd0vaSFkP16LRp5XOJMTHF0f8QuPGkpBfVPXDWCkb3oJ3oJjxg==",
+      "dev": true,
+      "requires": {
+        "chalk": "^4.0.0",
+        "change-case": "^4.1.2",
+        "commander": "^5.1.0",
+        "fs-extra": "^8.1.0",
+        "glob": "^7.1.6",
+        "json5": "^2.1.3",
+        "jsonc-parser": "^3.0.0",
+        "lodash": "^4.17.15",
+        "tinycolor2": "^1.4.1"
+      }
+    },
+    "supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "requires": {
+        "has-flag": "^4.0.0"
+      }
+    },
+    "tinycolor2": {
+      "version": "1.4.2",
+      "resolved": "https://registry.npmjs.org/tinycolor2/-/tinycolor2-1.4.2.tgz",
+      "integrity": "sha512-vJhccZPs965sV/L2sU4oRQVAos0pQXwsvTLkWYdqJ+a8Q5kPFzJTuOFwy7UniPli44NKQGAglksjvOcpo95aZA==",
+      "dev": true
+    },
+    "tslib": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.1.tgz",
+      "integrity": "sha512-77EbyPPpMz+FRFRuAFlWMtmgUWGe9UOG2Z25NqCwiIjRhOf5iKGuzSe5P2w1laq+FkRy4p+PCuVkJSGkzTEKVw==",
+      "dev": true
+    },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
+      "dev": true
+    },
+    "upper-case": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/upper-case/-/upper-case-2.0.2.tgz",
+      "integrity": "sha512-KgdgDGJt2TpuwBUIjgG6lzw2GWFRCW9Qkfkiv0DxqHHLYJHmtmdUIKcZd8rHgFSjopVTlw6ggzCm1b8MFQwikg==",
+      "dev": true,
+      "requires": {
+        "tslib": "^2.0.3"
+      }
+    },
+    "upper-case-first": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/upper-case-first/-/upper-case-first-2.0.2.tgz",
+      "integrity": "sha512-514ppYHBaKwfJRK/pNC6c/OxfGa0obSnAl106u97Ed0I625Nin96KAjttZF6ZL3e1XLtphxnqrOi9iWgm+u+bg==",
+      "dev": true,
+      "requires": {
+        "tslib": "^2.0.3"
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    }
+  }
+}
diff --git a/examples/advanced/custom-filters/package.json b/examples/advanced/custom-filters/package.json
new file mode 100644
index 000000000..a0461ec09
--- /dev/null
+++ b/examples/advanced/custom-filters/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "style-dictionary-filters",
+  "version": "1.0.0",
+  "description": "",
+  "main": "build/index.js",
+  "files": [
+    "build",
+    "properties"
+  ],
+  "scripts": {
+    "build": "node ./build.js",
+    "clean": "rm -rf build",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "Apache-2.0"
+}
diff --git a/examples/advanced/custom-filters/tokens/spacing.json b/examples/advanced/custom-filters/tokens/spacing.json
new file mode 100644
index 000000000..1876a7ad7
--- /dev/null
+++ b/examples/advanced/custom-filters/tokens/spacing.json
@@ -0,0 +1,20 @@
+{
+  "margin": {
+    "small" : {
+      "value": "0.15",
+      "group": "spacing"
+    },
+    "medium": {
+      "value": "0.25",
+      "group": "spacing"
+    },
+    "large" : {
+      "value": "0.6",
+      "group": "spacing"
+    },
+    "extralarge" : {
+      "value": "1",
+      "group": "spacing"
+    }
+  }
+}
diff --git a/index.js b/index.js
index 78ef25fd9..14ec78ad5 100644
--- a/index.js
+++ b/index.js
@@ -43,8 +43,8 @@ var StyleDictionary = {
   format: require('./lib/common/formats'),
   action: require('./lib/common/actions'),
   formatHelpers: require('./lib/common/formatHelpers'),
-  filter: {}, // we need to initialise the object, since we don't have built-in filters
-  parsers: [], // ditto ^
+  filter: require('./lib/common/filters'),
+  parsers: [], // we need to initialise the array, since we don't have built-in parsers
   fileHeader: {},
 
   registerTransform: require('./lib/register/transform'),
diff --git a/lib/common/filters.js b/lib/common/filters.js
new file mode 100644
index 000000000..af0e23d5e
--- /dev/null
+++ b/lib/common/filters.js
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
+ * the License. A copy of the License is located at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * or in the "license" file accompanying this file. This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions
+ * and limitations under the License.
+ */
+
+/**
+ * @namespace Filters
+ */
+
+module.exports = {
+  /**
+   * Remove a token from the ditribution output if it contains a key `private` set to true
+   *
+   * @memberof Filters
+   * 
+   * @param {Object} token
+   * @returns {Boolean} 
+   */
+  removePrivate: function(token) {
+    return (token && token.private) ? false : true
+  }
+}
diff --git a/scripts/version.js b/scripts/version.js
index 994485779..7dc8cbad8 100644
--- a/scripts/version.js
+++ b/scripts/version.js
@@ -1,6 +1,5 @@
 const fs = require('fs-extra');
 const glob = require('glob');
-const path = require('path');
 const execSync = require('child_process').execSync;
 const PACKAGE = require('../package.json');
 const packageJSONs = glob.sync('./examples/*/*/package.json', {});