--- title: JPEG XL Is Finally Getting Real Cross-Browser Support description: JPEG XL is set to gain genuine cross-browser support, with Mozilla planning to enable it by default in Firefox 157 next month, Chrome signaling intent to ship,... canonical: https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: JPEG XL Is Finally Getting Real Cross-Browser Support | daily.dev og:description: JPEG XL is set to gain genuine cross-browser support, with Mozilla planning to enable it by default in Firefox 157 next month, Chrome signaling intent to ship,... og:url: https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq og:image: https://api.daily.dev/og/posts/y58YN4tWq.png og:image:alt: JPEG XL Is Finally Getting Real Cross-Browser Support og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # JPEG XL Is Finally Getting Real Cross-Browser Support **[Collections](https://daily.dev/sources/collections)** · 2 min read · 2 upvotes · 0 comments ## Summary JPEG XL is set to gain genuine cross-browser support, with Mozilla planning to enable it by default in Firefox 157 next month, Chrome signaling intent to ship, and Safari already offering a partial implementation. A new Rust-based decoder called jxl-rs, built by Google Research at Mozilla's urging, replaces the original 100,000-line C++ decoder to address security concerns and adds progressive rendering, which Safari's current implementation lacks. JPEG XL and AVIF continue to trade advantages depending on use case, so there's no single overall winner between the two formats. ## Content Firefox 157, due at the end of September, will enable JPEG XL image decoding by default. Mozilla posted its formal intent to ship, and Chrome has done the same for the Blink engine. Safari already has partial JPEG XL support, so full cross-browser coverage looks likely before the end of the year. Firefox has had experimental JPEG XL support since version 152, and Nightly already has it on by default for testing. The main thing that made this possible is a new Rust-based decoder called jxl-rs, built by Google Research. Mozilla apparently challenged them to write a safe alternative to the original C++ decoder, which ran to around 100,000 lines and raised enough security concerns to block shipping. The Rust implementation cleared that bar. One thing worth noting: jxl-rs supports progressive rendering, which Safari's JPEG XL implementation doesn't. That matters for large images on slow connections, where you'd rather show a blurry preview than a blank space. ## How JPEG XL compares to AVIF The two formats aren't really competing for the same use cases. JPEG XL tends to win on lossless compression and progressive rendering. AVIF produces smaller files at typical web quality settings. So the short version is: AVIF for photos you're serving at 80% quality, JPEG XL for lossless assets or anything where progressive loading matters. ## Questions this post answers ### Which Firefox version enables JPEG XL support by default? Firefox 157 is planned to ship with JPEG XL enabled by default, expected to reach the main release in the next release cycle. Mozilla has posted its intent to ship the format after years of inconsistent support. Chrome has also signaled intent to ship JPEG XL, and Safari already has a partial implementation, making broad cross-browser support realistic soon. _Track browser rollout milestones like this JPEG XL support on daily.dev before betting on a new image format._ ### What is jxl-rs and why was it created? jxl-rs is a new JPEG XL decoder written in Rust, built by Google Research after Mozilla challenged them to create a safer alternative to the original decoder. The original C++ decoder was roughly 100,000 lines of code, a size that made browser vendors wary of security risks. The Rust version also adds progressive rendering support, which Safari's existing implementation currently lacks. _Developers weighing memory-safe rewrites can follow decoder projects like jxl-rs on daily.dev._ ### Should I use JPEG XL or AVIF for web images? There is no single overall winner between JPEG XL and AVIF; the better choice depends on the specific use case. The two formats trade advantages depending on whether the priority is lossless compression, high-quality photos, or typical web-quality images, so testing against your actual image content matters more than picking one format outright. _Comparing image format trade-offs like JPEG XL versus AVIF is easier with daily.dev's developer coverage._ --- Tags: [#rust](https://daily.dev/tags/rust), [#firefox](https://daily.dev/tags/firefox) [View this post on daily.dev](https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"JPEG XL Is Finally Getting Real Cross-Browser Support","url":"https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq"},"datePublished":"2026-08-24T15:45:16.387Z","dateModified":"2026-08-29T06:30:42.091Z","description":"JPEG XL is set to gain genuine cross-browser support, with Mozilla planning to enable it by default in Firefox 157 next month, Chrome signaling intent to ship,...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6298e50f599be693f0f70c5023d587f1?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/6298e50f599be693f0f70c5023d587f1?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Collections","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Collections","logo":"https://media.daily.dev/image/upload/s--fk_6ycEi--/f_auto,q_auto/v1780996001/logos/collections?_a=BAMAMiWQ0","url":"https://daily.dev/sources/collections"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"rust,firefox","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Collections","item":"https://daily.dev/sources/collections"},{"@type":"ListItem","position":3,"name":"JPEG XL Is Finally Getting Real Cross-Browser Support"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/jpeg-xl-is-finally-getting-real-cross-browser-support-y58yn4twq#faq","mainEntity":[{"@type":"Question","name":"Which Firefox version enables JPEG XL support by default?","acceptedAnswer":{"@type":"Answer","text":"Firefox 157 is planned to ship with JPEG XL enabled by default, expected to reach the main release in the next release cycle. 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