Add jxl-rs decoder to Firefox 149 release notes and experimental features page#43400
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Add jxl-rs decoder to Firefox 149 release notes and experimental features page#43400
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dipikabh
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Mar 11, 2026
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dipikabh
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dipikabh
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Looking good, I've left a rephrasing suggestion for you to consider.
Thank you!
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| - **JPEG XL image support: Rust-based decoder**: `image.jxl.enabled` | ||
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| The internal [JPEG XL](https://jpeg.org/jpegxl/) image decoder has been replaced with a new Rust-based implementation using the `jxl-rs` library, replacing the previous C++ decoder. ([Firefox bug 1986393](https://bugzil.la/1986393)). |
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or this:
Suggested change
| The internal [JPEG XL](https://jpeg.org/jpegxl/) image decoder has been replaced with a new Rust-based implementation using the `jxl-rs` library, replacing the previous C++ decoder. ([Firefox bug 1986393](https://bugzil.la/1986393)). | |
| The previous C++ [JPEG XL](https://jpeg.org/jpegxl/) image decoder has been replaced with a new Rust-based implementation that uses the `jxl-rs` library. ([Firefox bug 1986393](https://bugzil.la/1986393)). |
- "using" could mean that the decoder replacement was done using that library, rather than that the new implementation uses it
| See [Firefox bug 1539075](https://bugzil.la/1539075) for more details. | ||
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| Note that, as shown below, the feature is only available on Nightly builds (irrespective of whether the preference is set). | ||
| In Firefox 149, the internal JPEG XL image decoder was replaced with a new Rust-based implementation using the `jxl-rs` library ([Firefox bug 1986393](https://bugzil.la/1986393)). |
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same suggestion here
Plus you might want to add the link JPEG XL link and the C++ mention here as well
FooIbar
reviewed
Mar 12, 2026
| | Release | — | — | | ||
| | Developer Edition | 149 | No | | ||
| | Beta | 149 | No | | ||
| | Release | 149 | No | |
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FYI it's still nightly only so these should not be changed.
https://github.com/mozilla-firefox/firefox/blob/7095e662eec49a42856e0d99f2ff96c08130119c/toolkit/moz.configure#L915
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Description
Adds the jxl-rs decoder as an experimental feature.
Motivation
Firefox 149 release project.