Merge pull request #4032 from radarhere/ico_saving

Documented OS support for ICO saved files
python-pillow · Aug 22, 2019 · 72a8f63 · 72a8f63
2 parents aec17ed + 4834157
commit 72a8f63
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/PIL/IcoImagePlugin.py b/src/PIL/IcoImagePlugin.py
@@ -263,6 +263,9 @@ class IcoImageFile(ImageFile.ImageFile):
 
     Handles classic, XP and Vista icon formats.
 
+    When saving, PNG compression is used. Support for this was only added in
+    Windows Vista.
+
     This plugin is a refactored version of Win32IconImagePlugin by Bryan Davis
     <casadebender@gmail.com>.
     https://code.google.com/archive/p/casadebender/wikis/Win32IconImagePlugin.wiki