JPEG XL
From Just Solve the File Format Problem
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== Identification == | == Identification == | ||
Based on the [https://gitlab.com/wg1/jpeg-xl/-/blob/master/lib/jxl/decode.cc reference implementation], JPEG XL codestreams start with bytes {{magic|ff 0a}}. | Based on the [https://gitlab.com/wg1/jpeg-xl/-/blob/master/lib/jxl/decode.cc reference implementation], JPEG XL codestreams start with bytes {{magic|ff 0a}}. | ||
| − | Codestreams may also be wrapped in an ISOBMFF-based file format ([https://gitlab.com/wg1/jpeg-xl/-/blob/master/tools/box/box.cc implementation]). | + | Codestreams may also be wrapped in an ISOBMFF-based file format ([https://gitlab.com/wg1/jpeg-xl/-/blob/master/tools/box/box.cc implementation]). See [https://gitlab.com/wg1/jpeg-xl/-/blob/main/doc/format_overview.md format overview]. |
== Specifications == | == Specifications == | ||
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== Software == | == Software == | ||
* [https://gitlab.com/wg1/jpeg-xl Open-source reference software] | * [https://gitlab.com/wg1/jpeg-xl Open-source reference software] | ||
| + | * [https://jpegxl-converter.com/ Online converter to JXL] | ||
== Sample files == | == Sample files == | ||
Revision as of 23:59, 30 September 2021
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.
JPEG XL is based in part on the FUIF and PIK formats.[1] The standard also supports recompression of JPEG files with bit-exact reconstruction.
Contents |
Identification
Based on the reference implementation, JPEG XL codestreams start with bytes ff 0a.
Codestreams may also be wrapped in an ISOBMFF-based file format (implementation). See format overview.
Specifications
- Committee Draft of JPEG XL (2019-08)
- ISO/IEC 18181
Software
Sample files
Links
- Overview of JPEG XL
- Next-Generation Image Compression (JPEG XL) Draft Call for Proposals (2017-11)
- Revised Draft Call for Proposals (2018-02)
- Final Call for Proposals (2018-04)
- Gigazine article (2017-08-15)
- Slides from Imagecon 2019 presentation
- Introductory paper (open access)
- Benchmarking JPEG XL image compression
- How JPEG XL Compares to Other Image Codecs (2020-05-26)
- Codestream vs Container discussion
