mozjpeg greatly improved the state of art jpeg encodig, while maintaining full backwards compatibility https://github.com/mozilla/mozjpeg https://github.com/moz

mozjpeg greatly improved the state of art jpeg encodig, while maintaining full backwards compatibility https://github.com/mozilla/mozjpeg https://github.com/mozilla/mozjpeg but there's a limit on what can be done with the primitives that jpeg offers. for example, jpeg is stuck with the older huffman coding for the entropy encoding part, instead of the better arithmetic coding or asymetric numeral systems