convpng

About

This is the foremost tool in CE image conversion. Simply hand it a bunch of images, and it will determine the best 8-bit palette and create either a C, assembly, or ICE include file for use in your programs.

For usage, please see the relevant readme

Once you've downloaded the binary, you probably want to discard the OS prefix and move it into a directory of your $PATH, so you can directly call convpng.