http://fileformats.archiveteam.org/api.php?action=feedcontributions&feedformat=atom&user=JonsneyersJust Solve the File Format Problem - User contributions [en]2026-05-23T10:49:57ZUser contributionsMediaWiki 1.19.2http://fileformats.archiveteam.org/wiki/JPEG_XLJPEG XL2021-05-21T09:09:06Z<p>Jonsneyers: add/update information on JPEG XL</p>
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<div>{{FormatInfo<br />
|formattype=electronic<br />
|subcat=Graphics<br />
|extensions={{ext|jxl}}<br />
|mimetypes={{mimetype|image/jxl}}<br />
|extended from=[[JPEG]], [[PIK]], [[FUIF]]<br />
|magic={{magic|FF 0A}} or {{magic|00 00 00 0C 4A 58 4C 20 0D 0A 87 0A}}<br />
|patent license=Royalty-Free<br />
|released=2021<br />
}}<br />
'''JPEG XL''' is a compressed image format and/or file format that is yet another attempt to be the next [[JPEG]]. It was first announced around 2017-08. It is expected to be published as ISO/IEC 18181.<br />
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JPEG XL is based in part on the [[FUIF]] and [[PIK]] formats.[https://github.com/cloudinary/fuif/blob/3ed48249a9cbe68740aa4ea58098ab0cd4b87eaa/README.md] The standard also supports recompression of JPEG files with bit-exact reconstruction.<br />
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== Identification ==<br />
Based on the [https://gitlab.com/wg1/jpeg-xl/-/blob/master/jxl/dec_file.cc reference implementation], JPEG XL codestreams start with bytes {{magic|ff 0a}}.<br />
Codestreams may also be wrapped in an ISOBMFF-based file format ([https://gitlab.com/wg1/jpeg-xl/-/blob/master/tools/box/box.cc implementation]).<br />
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== Specifications ==<br />
* [https://arxiv.org/abs/1908.03565 Committee Draft of JPEG XL] (2019-08)<br />
* [https://www.iso.org/standard/77977.html ISO/IEC 18181]<br />
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== Software ==<br />
* [https://gitlab.com/wg1/jpeg-xl Open-source reference software]<br />
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== Links ==<br />
* [https://jpeg.org/jpegxl/ Overview of JPEG XL]<br />
* [https://jpeg.org/items/20171107_cfp_jpeg_xl.html Next-Generation Image Compression (JPEG XL) Draft Call for Proposals] (2017-11)<br />
* [https://jpeg.org/items/20180221_cfp_jpeg_xl.html Revised Draft Call for Proposals] (2018-02)<br />
* [https://jpeg.org/items/20180423_cfp_jpeg_xl.html Final Call for Proposals] (2018-04)<br />
* [http://gigazine.net/gsc_news/en/20170815-jpeg-xl-call-for-draft/ Gigazine article] (2017-08-15)<br />
* [https://www.slideshare.net/cloudinarymarketing/imagecon-2019-jon-sneyer Slides from Imagecon 2019 presentation]<br />
* [https://www.spiedigitallibrary.org/proceedings/Download?fullDOI=10.1117%2F12.2529237 Introductory paper (open access)]<br />
* [https://doi.org/10.1117/12.2556264 Benchmarking JPEG XL image compression]<br />
* [https://cloudinary.com/blog/how_jpeg_xl_compares_to_other_image_codecs How JPEG XL Compares to Other Image Codecs] (2020-05-26)<br />
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[[Category:JPEG (organization)]]<br />
[[Category:JPEG]]<br />
[[Category:Box file format]]</div>Jonsneyers