I like the small size of the decoder state - not much more than 256 bytes. I haven't found a way to decode GIF with less than about 16k of mutable state. PNG

I like the small size of the decoder state - not much more than 256 bytes. I haven't found a way to decode GIF with less than about 16k of mutable state. PNG is similar though you can use the decoded image if it's available.