# JPEG XL Viewer plugin

**URL:** <https://resource.dopus.com/t/jpeg-xl-viewer-plugin/42965>\
**Category:** Viewer/VFS Plugins\
**Tags:** viewer, thumbnails, source-available\
**Created:** [November 27, 2022, 9:25pm UTC](https://resource.dopus.com/t/jpeg-xl-viewer-plugin/42965 "2022-11-27T21:25:57Z")\
**Posts on this page:** 1\
**Showing post:** 48

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**Author:** ![Guido](https://resource.dopus.com/user_avatar/resource.dopus.com/guido/32/56013_2.png) [@Guido](https://resource.dopus.com/u/Guido)\
**Post date:** [December 3, 2025, 4:33pm UTC](https://resource.dopus.com/t/jpeg-xl-viewer-plugin/42965/48 "2025-12-03T16:33:21Z")

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@mojo-chan

There is a very simple fact which is overlooked:

- JPEG: has substance
- "JPEG 2000", "JPEG XL", etc. (everything coming from ISO WG1): have no substance

The substance of JPEG is in four fundamental properties for image representation.

Upcoming JPEG 10 will enable backward compatible HDR support, as announced in the [infancy article](https://ijg.org/docs/JPEG_33_Years_And_Still_In_Its_Infancy.pdf).

Lossless transcoding of JPEG for smaller file sizes can already be done with _jpegtran_ or _Jpegcrop_.  
It is called arithmetic coding.  
See also my recent post [here](https://resource.dopus.com/t/force-lossless-rotation-of-jpegs/54572/17).

 ![preferences](https://resource.dopus.com/uploads/default/original/3X/1/0/10f8615c4a5da56d6757c61cf804f6177715a11f.png)

You could add any other entropy coding method with lossless transcoding to **JPEG** if you are really interested in the feature.

The fact that they do **not** add it to **JPEG** but to an otherwise unusable format shows that they are not really interested in making such feature usable.

Arithmetic encoded or transcoded JPEG is at least **usable**.  
I use it since many years for almost all my local JPEG images.  
That's why it is the default setting in Jpegcrop.

Regards  
Guido  
JPEG developer

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