I've made a pure Python implementation of the QOI image format
[link to the code](https://github.com/SudoOmbro/qoi_converter)

as said in the title, it's a pure python implementation of the [qoi format](https://qoiformat.org/), a lossless image compression methd that manages be 50x faster while encoding and 3x-4x while faster decoding than PNG.

Python isn't known to be fast though, but this implementation is not too bad speed wise to be fair.

More info on how it was implemented in the README :)