LGTM2. Similar to Yoav, I'm very excited for this feature On Mon, Aug 24, 2026, 09:12 Yoav Weiss (@Shopify) <[email protected]> wrote:
> I guess I can expand a bit more.. :) > > This is an exciting addition to the web platform, that will enable > improved image compression at reduced CPU costs on the encoding side. > Thanks for pushing this through!! > > On Mon, Aug 24, 2026 at 2:15 PM Yoav Weiss (@Shopify) < > [email protected]> wrote: > >> LGTM1 >> >> On Mon, Aug 24, 2026 at 1:08 PM Chromestatus < >> [email protected]> wrote: >> >>> *Contact emails* >>> [email protected], [email protected] >>> >>> *Explainer* >>> *No information provided* >>> >>> *Specification* >>> https://www.iso.org/standard/85066.html >>> >>> *Summary* >>> Adds support for decoding JPEG XL (image/jxl) images in Blink using >>> jxl-rs, a memory-safe pure Rust decoder ( >>> https://github.com/libjxl/jxl-rs). JPEG XL is a modern image format >>> standardized as ISO/IEC 18181 that offers progressive decoding for improved >>> perceived loading performance, support for wide color gamut, HDR, and high >>> bit depth, and support for animation. >>> >>> *Blink component* >>> Internals>Images>Codecs>JPEG XL >>> <https://issues.chromium.org/issues?q=customfield1222907:%22Internals%3EImages%3ECodecs%3EJPEG%20XL%22> >>> >>> *Web Feature ID* >>> jpegxl <https://webstatus.dev/features/jpegxl> >>> >>> *Motivation* >>> (see Summary) >>> >>> *Initial public proposal* >>> *No information provided* >>> >>> *TAG review* >>> https://github.com/w3ctag/design-reviews/issues/633 >>> >>> *TAG review status* >>> Issues addressed >>> >>> *Goals for experimentation* >>> >>> >>> *Risks* >>> >>> >>> *Interoperability and Compatibility* >>> No special risks. Note that the C++ and the Rust version are both tested >>> against the same conformance test corpus. >>> >>> *Gecko*: Shipped/Shipping also migrating to rust version >>> >>> *WebKit*: Shipped/Shipping WebKit currently uses the C++ decoder. >>> >>> *Web developers*: Strongly positive >>> >>> *Other signals*: >>> >>> *WebView application risks* >>> >>> Does this intent deprecate or change behavior of existing APIs, such >>> that it has potentially high risk for Android WebView-based applications? >>> New feature, no special risk >>> >>> >>> *Debuggability* >>> *No information provided* >>> >>> *Will this feature be supported on all six Blink platforms (Windows, >>> Mac, Linux, ChromeOS, Android, and Android WebView)?* >>> Yes >>> >>> *Is this feature fully tested by web-platform-tests >>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >>> Yes >>> https://wpt.fyi/results/jpegxl?label=experimental&label=master&aligned >>> There is extensive conformance testing outside of WPT too. WPTs show >>> failures because the flag is disabled in wpt runs. >>> https://wpt.fyi/results/jpegxl?sha=3d06a34791fc33532baffe64e5c48c450cb1a1b9 >>> shows a run with the flag enabled, which has two failures. The >>> icc-uncommon-profile-reftest.html failure is a small difference visually, >>> currently investigating. The cmyk-basic-conversion-reftest.html failure is >>> being fixed in >>> https://chromium-review.git.corp.google.com/c/chromium/src/+/8275513 >>> >>> *Flag name on about://flags* >>> enable-jxl-image-format >>> >>> *Finch feature name* >>> JXLImageFormat >>> >>> *Rollout plan* >>> Will ship enabled for all users >>> >>> *Requires code in //chrome?* >>> False >>> >>> *Availability expectation* >>> Feature is available on Web Platform Baseline within 12 months of launch >>> in Chrome. >>> >>> *Adoption expectation* >>> Feature is considered a best practice for some use case within 12 months >>> of reaching Web Platform baseline. >>> >>> *Adoption plan* >>> Multiple players on the web have expressed interest in deploying JPEG XL >>> images, including at least Cloudinary and Shopify, as well as multiple web >>> developers during the Interop process. >>> >>> *Non-OSS dependencies* >>> >>> Does the feature depend on any code or APIs outside the Chromium open >>> source repository and its open-source dependencies to function? >>> No. >>> >>> *Estimated milestones* >>> >>> No milestones specified >>> >>> >>> *Anticipated spec changes* >>> >>> Open questions about a feature may be a source of future web compat or >>> interop issues. Please list open issues (e.g. links to known github issues >>> in the project for the feature specification) whose resolution may >>> introduce web compat/interop risk (e.g., changing to naming or structure of >>> the API in a non-backward-compatible way). >>> N/A >>> >>> *Link to entry on the Chrome Platform Status* >>> https://chromestatus.com/feature/5114042131808256?gate=6594362739916800 >>> >>> This intent message was generated by Chrome Platform Status >>> <https://chromestatus.com>. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "blink-dev" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion visit >>> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a8c2618.f0bac957.7b6f1.087d.GAE%40google.com >>> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a8c2618.f0bac957.7b6f1.087d.GAE%40google.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohS%2B1zzOXQ9DPn0za1HyMGmqkrs0DO9EfiUM62oH8fG0w4w%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAOmohS%2B1zzOXQ9DPn0za1HyMGmqkrs0DO9EfiUM62oH8fG0w4w%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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