# Mozilla plans JPEG XL default support in Firefox 157

_Tuesday, August 25, 2026 at 1:55 PM EDT · Products · Latest · Tier 2 — Notable_

Mozilla developer Timothy Nikkel said Firefox 157 is intended to enable JPEG XL decoding by default on all platforms. The Rust-based jxl-rs decoder is currently enabled by default only in Nightly and available through a Firefox Labs checkbox on other channels. Mozilla says the implementation supports animation and progressive display, while planned multithreaded-decoding patches are still expected to land. HDR JPEG XL images will display as SDR.

## Sources

- [groups.google.com](https://groups.google.com/a/mozilla.org/g/dev-platform/c/3YMV4MS34KA?pli=1)

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