The CUR file format is an almost identical image file format for non-animated cursors in Microsoft Windows. The ICO file format is an image file format for computer icons in Microsoft Windows.
It has since come into widespread usage on the World Wide Web due to its wide support and portability. The Graphics Interchange Format (better known by its acronym GIF) is a bitmap image format introduced by CompuServe in 1987. GIF - CompuServe Graphics Interchange Format
