Hi everyone!
I've made this plugin mostly for myself, but decided to publish it in case someone might find it useful.
It adds the support to load and save QOI images - https://phoboslab.org/log/2021/11/qoi-fast-lossless-image-compression Compatibility: 4.3.1+
Installation:
Just put QoiFileTypeNet.dll into your FileTypes folder (usually it's C:\Program Files\Paint.NET\FileTypes)
Download: QoiFileTypeNet.zip GitHub link: https://github.com/iOrange/QoiFileTypeNet