This effect happens naturally, after re-saving print screen of an image in JPG format a few times. More interesting might be pixray project (https://github.

This effect happens naturally, after re-saving print screen of an image in JPG format a few times. More interesting might be pixray project (https://github.com/dribnet/pixray https://github.com/dribnet/pixray) where pixel art is generated using machine learning from keyword prompts.