diff --git a/Documentation/Gifbuilder/Examples.rst b/Documentation/Gifbuilder/Examples.rst
index c096b601a..d9da32974 100644
--- a/Documentation/Gifbuilder/Examples.rst
+++ b/Documentation/Gifbuilder/Examples.rst
@@ -9,6 +9,25 @@ Examples
 ..  contents::
     :local:
 
+..  _gifbuilder-examples-avif:
+
+Using the AVIF format
+=====================
+
+..  versionadded:: 13.3
+
+AVIF is an image format, that is supported by most modern browsers, and usually
+has a better compression (= smaller file size) than jpg files.
+
+..  important::
+
+    Before using this feature, please check whether the used operating system
+    actually supports de/encoding AVIF files. Especially Debian 11 (Bullseye)
+    and older or systems forked from that may lack AVIF support.
+
+..  literalinclude:: _snippets/_avif.typoscript
+    :caption: EXT:config/sites/my_site/setup.typoscript
+
 
 Masking semi-transparent images (Logos) onto other images
 =========================================================
diff --git a/Documentation/Gifbuilder/Properties.rst b/Documentation/Gifbuilder/Properties.rst
index b7aa228ad..f0536904e 100644
--- a/Documentation/Gifbuilder/Properties.rst
+++ b/Documentation/Gifbuilder/Properties.rst
@@ -153,15 +153,9 @@ charRangeMap
 format
 ======
 
-..  versionchanged:: 13.0
-    The default format is now "png". Before TYPO3 v13.0 this was "gif".
-
-..  versionadded:: 13.0
-    Support for WebP has been added.
-
 ..  confval:: format
     :name: gifbuilder-properties-format
-    :type: "gif" / "jpg" / "jpeg" / "png" / "webp"
+    :type: "gif" / "jpg" / "jpeg" / "png" / "webp" / "avif"
     :Default: png
 
     File type of the output image.
@@ -170,9 +164,16 @@ format
 
     *   :ref:`$TYPO3_CONF_VARS['GFX']['jpg_quality'] <t3coreapi:typo3ConfVars_gfx_jpg_quality>` for a JPG image
     *   :ref:`$TYPO3_CONF_VARS['GFX']['webp_quality'] <t3coreapi:typo3ConfVars_gfx_webp_quality>` for a WebP image
+    *   :ref:`$TYPO3_CONF_VARS['GFX']['avif_quality'] <t3coreapi:typo3ConfVars_gfx_webp_quality>` for a AVIF image
 
     or via the :ref:`gifbuilder-properties-quality` property on a per-image basis.
 
+    ..  versionchanged:: 13.0
+        The default format is now "png". Before TYPO3 v13.0 this was "gif".
+
+    ..  versionadded:: 13.0
+        Support for WebP and AVIF have been added.
+
 
 .. _gifbuilder-properties-maxHeight:
 
@@ -231,6 +232,18 @@ quality
 
     ..  _"lossless" compression: https://developers.google.com/speed/webp/docs/compression#lossless_webp
 
+.. _gifbuilder-properties-speed:
+
+speed
+=====
+
+..  confval:: speed
+    :name: gifbuilder-properties-speed
+    :type: integer
+
+    Set the "speed" for files in format AVIF (See
+    https://www.php.net/manual/en/function.imageavif.php for more details).
+
 
 .. _gifbuilder-properties-transparentBackground:
 
diff --git a/Documentation/Gifbuilder/_snippets/_avif.typoscript b/Documentation/Gifbuilder/_snippets/_avif.typoscript
new file mode 100644
index 000000000..64888edae
--- /dev/null
+++ b/Documentation/Gifbuilder/_snippets/_avif.typoscript
@@ -0,0 +1,15 @@
+page.10 = IMAGE
+page.10 {
+  file = GIFBUILDER
+  file {
+    backColor = yellow
+    XY = 1024,199
+    format = avif
+    quality = 44
+    speed = 1
+
+    10 = IMAGE
+    10.offset = 10,10
+    10.file = 1:/my-image.jpg
+  }
+}