@Edent You said, “Neither JPEG XL nor QOI are supported in mainstream browsers yet.” I believe Safari began supporting JPEG XL as of v.17.x, which was part of the recent major Apple OS updates.

@Edent I think you could do a .tga transparent pixel in 20 bytes but so few things read it these days, even though it’s the default output from 3DSmax still. Bane of my life as it also defaults to uncompressed so is huge