djxl

Decompress JPEG XL images. Accepted output extensions are PNG, APNG, JPEG, EXR, PGM, PPM, PNM, PFM, PAM, EXIF, XMP and JUMBF. More information: https://github.com/libjxl/libjxl.

• Decompress a JPEG XL image to another format:

djxl path/to/image.jxl path/to/output.ext

• Display an extremely detailed help page:

djxl --help --verbose --verbose --verbose --verbose