Firefox 157 to ship JPEG XL by default on all platforms

Firefox 157 will include JPEG XL by default on all platforms

Mozilla engineer Timothy Nikkel announced that Firefox 157 will enable JPEG XL decoding by default across all platforms. The decoder, jxl-rs, is written in Rust and has been developed behind a preference, with a Firefox Labs checkbox since version 152. The announcement highlights performance improvements, feature parity with other formats (including animation and progressive display), and extensive testing. However, a community member raised concerns about lossless JPEG XL being 30x slower to decode than lossless WebP, suggesting a possible trade-off.