I just read the PDF spec. That's awesome! I particularly like the four 2-bit tags that allow you to encode: runs of a previously seen pixel, or a color Delta (

I just read the PDF spec. That's awesome! I particularly like the four 2-bit tags that allow you to encode: runs of a previously seen pixel, or a color Delta (big or small), or a previously seen pixel. Plus, the simple hash function of previously seen pixels (inner product of rgba and the first four odd primes) based on their color values, into a 64 slot array, it's just really nice. It's so refreshing to see one page specification. it just comes across as really elegant. Almost a work of art and has a certain aesthetic to it that I really like. It'll be cool to see more people creatively inventing standards. It's a worthwhile pursuit not because you think okay we're going to create a standard that's going to take over some other standard...nor a proliferation. But a file format a specification is a valid sort of medium of creative expression and output. It's a valid creative product I think. So it's just really really cool to see this!