Usage: Z:\019\jxl\2020\djxl.exe INPUT OUTPUT [OPTIONS...]
 INPUT
    the compressed input file
 OUTPUT
    the output can be PNG with ICC, JPG, or PPM/PFM.
 -V, --version
    print version number and exit
 --num_reps=N
 --use_sjpeg
    use sjpeg instead of libjpeg for JPEG output
 --jpeg_quality=N
    JPEG output quality
 --num_threads=N
    The number of threads to use
 --print_profile=0|1
    print timing information before exiting
 --print_info=0|1
    print AuxOut before exiting
 --bits_per_sample=N
    defaults to original (input) bit depth
 --color_space=RGB_D65_SRG_Rel_Lin
    defaults to original (input) color space
 -s 1,2,4,8,16, --downsampling=1,2,4,8,16
    maximum permissible downsampling factor (values greater than 16 will return the LQIP if available)
 --allow_partial_files
    allow decoding of truncated files
 --allow_more_progressive_steps
    allow decoding more progressive steps in truncated files. No effect without --allow_partial_files
 -j, --jpeg
    decode directly to JPEG when possible. Depending on the JPEG XL mode used when encoding this will produce an exact original JPEG file, a lossless pixel image data in a JPEG file or just a similar JPEG than the original image. The output file if provided must be a .jpg or .jpeg file.
 --print_read_bytes
    print total number of decoded bytes
 -h, --help
    Prints this help message.
