I want to create a script that will allow me to create or modify simple png files. I've started with this script, that parses all the standard "chunks" in the file, but I could not go through the CRC and compression (LZ77 derivate). Anybody want to help me? oldes PS: The PNG spec. I used: http://oldes.multimedia.cz/spec/REC-png.html
png.r
test.png