- Extension
- .ico
- .mac
- Format
- Binary
- Binary
- Category
- Raster Image
- Raster Image
- Developer
- Microsoft
- Apple
- Description
- An ICO file is an image format used to store icons for Windows programs, files, and folders. It contains two bitmaps: 1) the AND bitmap - the image mask (which determines what part of the icon is transparent) and 2) the XOR bitmap - contains the icon which is mapped onto the image mask. ICO files can be modified to create custom icons.
- Bitmap graphic created by MacPaint for the Macintosh, one of the first painting programs for the Mac; supports only black-and-white graphics since the original Macintosh had a monochrome monitor.
- MIME Type
- image/x-icon
- image/x-macpaint
