PPM Converter

PPM is deliberately plain: a short text header followed by raw RGB values, with no compression and no structure to parse. That is what you want when you are writing image code yourself or piping frames between command line tools, because reading and writing it takes a few lines. It belongs to the Netpbm family, next to PGM for grayscale and PBM for pure black and white. The files are enormous, so convert before sending one anywhere.