spaceducks

5 ms·

1. 1.▲
   by spaceducks 10mo ago

   WebP is much more limiting than JPEG XL. in lossy mode WebP has forced 4:2:0 chroma subsampling, supports only 8 bit per channel colors (really only about 7.8 bits, because thanks to WebP being tv-range the values aren't in a 0-255 ran
2. 2.▲
   by spaceducks 10mo ago

   The names and extensions of JPEG XL files aren't specified, except that the IANA media type is `image/jxl`. I think an argument could be made to use the double extension convention when the encoder performs lossless JPEG recompres
3. 3.▲
   by spaceducks 10mo ago

   I'm not sure if that will be an issue in practice. in any case, you need a JPEG XL decoder to perform the transition from a recompressed-JPEG-JXL to the original JPEG, so whatever tool is doing this, it can already handle native-JXL to
4. 4.▲
   by spaceducks 10mo ago

   > Nonsense. It has a lossy mode (which is its primary mode so to speak), so of course it has banding. Only lossless codecs can plausibly be claimed to be "immune to banding". color banding is not a result of lossy compression*,