Thanks for reminding me I implemented this 10 years ago. Here it is in 180 lines* of C https://github.com/fsmv/Tiny-GIF/blob/master/src/LZW.c https://github.com

Thanks for reminding me I implemented this 10 years ago. Here it is in 180 lines* of C https://github.com/fsmv/Tiny-GIF/blob/master/src/LZW.c https://github.com/fsmv/Tiny-GIF/blob/master/src/LZW.c * The dictionary part takes up a similar amount so maybe 2x that I think some image viewers didn't like how I made the gif data and then I didn't care enough to make it perfect because LZW was the interesting part and that worked.