In Firefox’s about:config, (only available in Beta, Nightly and forks) it’s the kmage.jxl.enable flag. In Chrome and forks, it’s the enable-jxl-image-format in chrome://flags. Both browsers should be on their way to having it on by default soon!
ⓘ Remember to enable JPEG-XL support in your browser, even on your phone!
In Firefox’s
about:config, (only available in Beta, Nightly and forks) it’s thekmage.jxl.enableflag. In Chrome and forks, it’s theenable-jxl-image-formatinchrome://flags. Both browsers should be on their way to having it on by default soon!ⓘ Remember to enable JPEG-XL support in your browser, even on your phone!