Imlib is a library with two main purposes. First, it can load image files in a large number of formats. Second, it can render those images to any X visual format that the application may need by doing color substitution and dithering.
Imlib has several native image loaders for common image formats like PNG, JPEG, and XPM. If it needs to load an image whose format it does not know about, it can use fallbacks by calling external programs such as ImageMagick or NetPBM.
The ability of rendering 24-bit RGB image data into any X visual representation is very important for GNOME. This allows it to run efficiently on any kind of video hardware while still having colorful icons and graphics, and at the same time allowing legacy X programs to allocate the colors they need.
In addition, Imlib provides miscellaneous image manipulation functions such as scaling, rotation, and color histogram manipulation.
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