GIMP
GIMP is a free, open-source image editor with layers, selections, color tools, filters, retouching, and broad import and export support.
Limitations: The interface has a learning curve, and some proprietary formats or color workflows do not transfer perfectly. Preserve an editable master and verify exports.
Why it is useful
GIMP is a free, open-source image editor with layers, selections, color tools, filters, retouching, and broad import and export support. This resource is especially useful for Editing raster images and exporting between common image formats. Review the current instructions and limitations from GIMP Project before relying on it for important work.
Limitations
The interface has a learning curve, and some proprietary formats or color workflows do not transfer perfectly. Preserve an editable master and verify exports.