djxl.txt (1276B)
1 djxl(1) 2 ======= 3 :doctype: manpage 4 5 Name 6 ---- 7 8 djxl - decompress JPEG XL images 9 10 Synopsis 11 -------- 12 13 *djxl* ['options'...] 'input.jxl' ['output'] 14 15 Description 16 ----------- 17 18 `djxl` decompresses a JPEG XL image or animation. The output format is determined 19 by the extension of the output file, which can be `.png`, `.jpg`, `.ppm`, `.pfm`. 20 If the JPEG XL input file contains an animation, multiple output files will be 21 produced, with names of the form "'output'-*framenumber*.ext". 22 23 24 Options 25 ------- 26 27 -h:: 28 --help:: 29 Displays the options that `djxl` supports. 30 31 -j:: 32 --pixels_to_jpeg:: 33 By default, if the input JPEG XL contains a recompressed JPEG file, 34 djxl reconstructs the exact original JPEG file if the output file has the 35 `.jpg` (or `.jpeg`) filename extension. 36 This flag causes the decoder to instead decode the image to pixels and 37 encode a new (lossy) JPEG in this case. 38 39 40 -q 'quality':: 41 --jpeg_quality='quality':: 42 When decoding to `.jpg`, use this output quality. This option implicitly 43 enables the --pixels_to_jpeg option. 44 45 46 Examples 47 -------- 48 49 ---- 50 # Decompress a JPEG XL file to PNG 51 $ djxl input.jxl output.png 52 53 # Reconstruct a losslessly-recompressed JPEG file 54 $ djxl lossless-jpeg.jxl reconstructed.jpeg 55 ---- 56 57 58 See also 59 -------- 60 61 *cjxl*(1)