Graphics & Design · Reviewed
GIMP
A free, open-source raster image editor for retouching photographs, compositing layers, painting and automating image-processing tasks across desktop operating systems.
Overview
GIMP, the GNU Image Manipulation Program, works with pixel-based images for photography, illustration and graphic production. Its tools include selections, layers, masks, brushes, color adjustments and filters. These can be combined for tasks ranging from removing a small blemish to constructing a composite from several source images.
Plug-ins and scripting extend its built-in functions and allow repeated operations to be automated. GIMP is developed as free software, so users can inspect and modify its code as well as use the application. Its workflows and file support differ from other image editors, making project requirements and interchange formats important when moving work between tools.
Key features
- Layers, masks and selections
- Photo retouching and color adjustment
- Painting and compositing tools
- Plug-ins and scripting
- Cross-platform open-source development
Historical significance
GIMP made a substantial image-editing environment available without a proprietary software purchase. Its significance also extends to the development ecosystem around GTK and to community approaches to professional creative tools. It offers a concrete history of how open-source software can support demanding visual work while evolving through distributed, long-term contribution.
History and development
Spencer Kimball and Peter Mattis began GIMP as a student project in 1995, and the first public release followed in 1996. The project grew through contributions from developers, testers, translators and documentation writers rather than a conventional commercial publishing organization.
Its interface work also led to GTK, a toolkit that became significant beyond GIMP itself. Later development expanded platform support, image-processing infrastructure and editing capabilities. The move to GIMP 3 in 2025 marked another major generation of the application, illustrating the continuing maintenance needed to adapt a long-lived open-source graphics program.