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Mozilla Presents Their Plan For Shipping JPEG-XL In Firefox 157
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Illustration only Photo by Drew Beamer on Unsplash
While Firefox 152+ already offers experimental JPEG-XL support, Mozilla formally announced today their plans for officially shipping JPEG-XL image format support in the Firefox web browser...
This announcement signals that JPEG-XL will move from an experimental feature to a stable, default-supported image format in Firefox. For engineers, it means they can rely on native JPEG-XL decoding without polyfills once users upgrade to Firefox 157 or later.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
Mozilla announced a plan to ship JPEG-XL support in Firefox 157.
Firefox 152+ already provides experimental JPEG-XL support.
The upcoming release will transition JPEG-XL from experimental to stable status.
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What the cluster adds up to.
Mozilla’s announcement marks a shift from experimental to stable JPEG-XL support in Firefox. The plan targets Firefox 157 as the version where the format will be shipped by default. Prior to this, only Firefox 152+ offered the format behind an experimental flag. This change means the format will be available to all users without manual enabling.
Adopting the change requires users to update to Firefox 157 or a later release. Developers will need to verify that their content works with the native decoder once the feature is stable. Testing will focus on confirming that image pipelines behave as expected. No additional costs are mentioned in the announcement beyond the browser update.
The feature will not be available in Firefox versions older than 152, and users who remain on those releases will continue to lack JPEG-XL support. Consequently, any web content that relies on JPEG-XL will fall back to alternative formats for those older browsers. Support also depends on the user running a version of Firefox that includes the change. No further details about fallback behavior are provided in the announcement.
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