^{Originally posted by AngelaDMerkel January 17, 2024}
Libvips struggles to properly handle metadata when moving between TIFF and JXL. Allowing JXL as foreign compression much like it does JPEG would help to realise many of the lossless space savings of JXL alongside the wide feature set of TIFF— without needing to compromise on metadata quality.
There is some precedent for this by Adobe. Adobe is using JXL compression inside their DNG files when performing a photomerge in Ligthtroom based on the logic of space savingings in linear DNG files.