Context: Even though Chromium has native support for AVIF, a very nice image format, Microsoft goes out of their way to remove it from Edge, which is a chromium fork. Jpeg XL (JXL) (not to be confused with Jpeg (JPG) or Jpeg 2000 (jpg2k) ) is another nice image format, which, IIRC, is only supported in Firefox.
WebKit has support for it (used in Safari and Epiphany). Last time I checked firefox didn’t have support. There is an issue in chromium bug tracker to add support for jxl where Adobe, Intel, Krita and probably others representatives said that they are insterested in the format. But this issue was closed because “no big companies are interested in jxl”.