This is a Server based on Golang, which allows you to serve WebP images on the fly.
It will convert
jpg,jpeg,png files by default, this can be customized by editing the
Currently supported image format: JPEG, PNG, BMP, GIF, SVG, HEIC, NEF, WEBP
e.g When you visit
https://your.website/pics/tsuki.jpg，it will serve as
image/avifformat without changing the URL.
GIF image will not be converted to AVIF format even with
true, because the converted AVIF image is not animated.