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Firefox 157 turns on JPEG XL decoding by default via image.jxl.enabled
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Firefox 157 will ship with JPEG XL decoding enabled by default on all platforms, using the jxl-rs Rust implementation after being behind a flag and a Firefox Labs checkbox since version 152.
Engineers can now use JPEG XL images in web content without requiring users to toggle flags, gaining access to its compression efficiency and features like animation and progressive rendering. The change aligns Firefox with Safari’s support while Chrome remains behind a flag, affecting cross-browser testing and performance considerations.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
JPEG XL decoding in Firefox 157 uses the jxl-rs Rust library and is controlled by the image.jxl.enabled preference.
The feature implements the ISO/IEC 18181 standard and includes support for animation, progressive display, and improved HDR tone mapping compared to other formats.
While Firefox enables JPEG XL by default, Safari already shipped it in version 17.0 and Chrome offers it only behind the #enable-jxl-image-format flag.
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