The GNU Image Manipulation Program, or GIMP, is a free raster graphics editor used to process digital graphics and photographs. Typical uses include creating graphics and logos, resizing and cropping photos, altering colors, combining multiple images, removing unwanted image features, and converting between different image formats. GIMP can also be used to create basic animated images in GIF format. It is often used as a free software replacement for Adobe Photoshop, the most widely used bitmap editor in the printing and graphics industries; however, it is not designed to be a Photoshop clone. The project's mascot is named Wilber.
The project was started in 1995 by Spencer Kimball and Peter Mattis and is now maintained by a group of volunteers under the auspices of the GNOME Project. The current version of GIMP works with numerous operating systems, including all modern Linux distributions, all recent versions of Microsoft Windows, and Apple's Mac OS X.