1DJXL(1)                                                                DJXL(1)
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NAME

6       djxl - decompress JPEG XL images
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SYNOPSIS

9       djxl [options...] input.jxl [output]
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DESCRIPTION

12       djxl decompresses a JPEG XL image or animation. The output format is
13       determined by the extension of the output file, which can be .png,
14       .jpg, .ppm, .pfm. If the JPEG XL input file contains an animation,
15       multiple output files will be produced, with names of the form
16       "output-framenumber.ext".
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OPTIONS

19       -h, --help
20           Displays the options that djxl supports.
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22       -j, --pixels_to_jpeg
23           By default, if the input JPEG XL contains a recompressed JPEG file,
24           djxl reconstructs the exact original JPEG file if the output file
25           has the .jpg (or .jpeg) filename extension. This flag causes the
26           decoder to instead decode the image to pixels and encode a new
27           (lossy) JPEG in this case.
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29       -q quality, --jpeg_quality=quality
30           When decoding to .jpg, use this output quality. This option
31           implicitly enables the --pixels_to_jpeg option.
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EXAMPLES

34           # Decompress a JPEG XL file to PNG
35           $ djxl input.jxl output.png
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37           # Reconstruct a losslessly-recompressed JPEG file
38           $ djxl lossless-jpeg.jxl reconstructed.jpeg
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SEE ALSO

41       cjxl(1)
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45                                  01/20/2022                           DJXL(1)