Beautiful forms are easier to predict. They would follow a known pattern. Therefore, a more aesthetic composition and better arrangements should produce easier patterns for a compression engine to catalog.
In this work, a generator is attempting to arrange basic shapes on a canvas in a way that will generate a minimal-size PNG files. The PNG algorithm is used a the naive compressor for discovering beauty.
See also “Simple Algorithmic Theory of Subjective Beauty, Novelty, Surprise, Interestingness, Attention, Curiosity, Creativity, Art, Science, Music, Jokes” by Jurgen Schmidhuber