GIMP

GIMP is a desktop application for editing and creating images. Its documented uses include photograph retouching, image restoration, creative compositions and original artwork. Graphic design work can also involve icons and interface elements. Color management supports workflows involving other graphics applications or desktop publishing, connecting image preparation with the material in which the result will be used.

Editing is organized around images, layers, channels and selections. Rectangular, elliptical and free selections identify the area to change, while brushes, pencils, airbrushes and cloning tools paint or repair image content. Rotation, scaling, shearing and flipping modify geometry. Multiple undo and redo operations let users revisit changes while building a composition or adjusting a photograph.

The manual lists formats including JPEG, PNG, GIF, TIFF and PSD, and describes conversion and batch image processing. GIMP runs across multiple desktop platforms and supports extensions through plugins and scripting. This allows interactive editing and repeated processing to use different entry points within the same application, with additional operations supplied through the extension system.