This repo contains the specification and an implementation of MOI, an image format designed to beat PNG in performance, size, and simplicity.
MOI was inspired by QOI, it takes the byte aligned tag encoding style of QOI and adds and tweaks some opcodes to achieve better compression while sacrificing some performance.
On these test images from the QOI benchmark, MOI manages to compress better than QOI and libpng, here's a comparison with QOI and the png implementation from the image crate (getting libpng to ffi with rust was too hard so I used image instead):
``` fmt | encode | decode | size moi | 25.226s | 12.352s | 21.649 qoi | 8.337s | 5.895s | 25.583 png1 | 98.640s | 34.915s | 28.002 png2 | 688.20s | 31.175s | 23.278
relative to qoi: 3.026 | 2.095 | 84.623 relative to png1: 0.256 | 0.354 | 77.314 relative to png2: 0.037 | 0.396 | 93.005 ``` This benchmark shows MOI compressing better and faster than PNG