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 config.json.

Currently supported image format: JPEG, PNG, BMP, GIF, SVG, HEIC

e.g When you visit https://your.website/pics/tsuki.jpg，it will serve as image/webp format without changing the URL.