[TheAceOfHearts]

This is really neat. I changed the quality value to 6: clang took ~20 minutes to compile and it used around 32GB of RAM. The resulting executable is 13KB, and it generates a 4KB image as output.

Here's a link of the output image: https://imgur.com/cUdForu

[exikyut]

Case in point: that 4KB output file refers to the size of the uncompressed PNM file, and as such is an inaccurate hint as to the image dimensions.

It's 64x64.