> I've also been pondering a backwards-compatible fork of PNG - but rather than a fork, mine would be a subset. Specifically, it would be an as-simple-as-possib

> I've also been pondering a backwards-compatible fork of PNG - but rather than a fork, mine would be a subset. Specifically, it would be an as-simple-as-possible uncompressed* bitmap format, suitable for use in low-complexity embedded systems etc. (e.g. bootloaders, wink wink). Look at the NetPBM formats (PPM, PGM, PGM). They are about as simple as they can possibly get (a tiny, ASCII, header, followed by binary bitmap data), and are also uncompressed. https://en.wikipedia.org/wiki/Netpbm https://en.wikipedia.org/wiki/Netpbm