pngquant is a command-line utility for converting 24/32-bit PNG
images to paletted (8-bit) PNGs. The conversion reduces file sizes
significantly (often as much as 70%) and preserves full alpha
transparency. Generated images are compatible with all modern web
browsers, and have better fallback in IE6 than 24-bit PNGs.
Maintained by: Kyle Guinn
(the SlackBuild does not include the source)