Yeah and web browsers ignore it for compatibility with web browsers that ignored it. I believe rotation is lossy if you don't do it in metadata and the file is

Yeah and web browsers ignore it for compatibility with web browsers that ignored it. I believe rotation is lossy if you don't do it in metadata and the file is using subsampling. Edit: some sites will rotate the file on upload, especially for scaled, non-original versions, to avoid this issue. I've done this at work in the past.