Comment by bobmcnamara

19 hours ago

I found it unfortunate because it's not a JPEG.

It has an operation mode where it can losslessly and reversibly compress a JPEG further, and "not a jpeg" wouldn't cover that.

  • JPEG XL is the thing that makes your JPEG smaller?

    • JPEG XL is basically 4 codecs in one...

      * A new lossy image Codec

      * A lossless image codec (lossless modular mode)

      * An alternative lossy image codec with different kinds of compression artifacts than those typically seen in JPEG (lossy modular mode)

      * JPEG packer

      Because it includes a JPEG packer, you can use it as such.