Windows Vista Icons : Editing Vista icons

Windows Vista Icons | What is new in Windows Vista Icons? | Windows Vista Icon FAQs

There is the Vista icon editor that can open and extract, modify and save Vista icons as well. Also one can save these icons for the Windows XP, without compression for full compatibility is also possible.

No any icon editors understands Vista icon format. It is because the format differs considerably. Special edition of RealWorld Icon Editor that fully supports Vista icons can be prepared using editors like RealWorld Icon Editor.

The PNG compression is used for the ICO file of the 256x256 images only. PNG compressed Windows Vista icons are not able to read and edit with an XP-only compatible icon editor, and also not viewable in the PNG image editor. You will require a Windows Vista compatible icon editor, like Axialis IconWorkshop, to edit such icons.