BTW, libjpeg turbo had been selected by JPEG (the group) as the reference implementation. There's no reason to entertain the old incompatible libjpeg fork. It

BTW, libjpeg turbo had been selected by JPEG (the group) as the reference implementation. There's no reason to entertain the old incompatible libjpeg fork. It didn't have any worthy compression improvements, and if you can use something less universally compatible, there's JPEG XL and AVIF, or even the old JPEG with arithmetic compression or Lepton recompressor.