Images that are used as icons in the Windows operating system must be saved in ICO format. By default, Adobe's Photoshop image-editing program does not support ICO format, making it impossible to make ...
Any Windows executable programs that display icons must use the ICO format for those icons. Icons can have transparent areas, which allows you to create icons with rounded corners or circular outlines ...
You can change nearly any desktop icon on both Mac and PC using the “Get Info” menu or the “Properties” menu.