Prediction-Encoded Pixels image format
Prediction-Encoded Pixels This format is specifically designed to be for low-color pixel art (<=16 colors works best, up to 256 colors is supported). It uses "Prediction by Partial Matching, Order-2" compression, which is able to compress packed-palette-indices smaller than GIF, PNG, and QOI, while sacrificing a bit of time. It's 2-10x slower than GIF/PNG/QOI (depending on the image), but often compresses the image 20-50% smaller than GIF/PNG (and multiple-times smaller than QOI). If you care