I've been learning about JPEG XL #generativeart and messing around with it over on cohost: https://cohost.org/arborelia/post/836312-i-grew-some-crystals

This is a 46 byte image file! Well, you're looking at a much larger .png of it

but it _could_ be a 46 byte image file if you were looking at the .jxl, which almost nothing supports yet