Contact emailstcap...@chromium.org ExplainerNone
Specificationhttps://html.spec.whatwg.org/#lazy-load-root-margin Summary Changes the lazy load intersection observer's init dictionary to use a scrollMargin instead of a rootMargin. This allows lazy loading images contained inside CSS scrollers, like carousels, to load as expected when near the viewport instead of the current behavior where these images load when at least one pixel is intersecting the viewport. Blink componentBlink>Image <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EImage> Search tagslazyload <https://chromestatus.com/features#tags:lazyload>, scrollmargin <https://chromestatus.com/features#tags:scrollmargin> TAG reviewNone TAG review statusNot applicable Risks Interoperability and Compatibility Overall low as scroll margin also applies to the root element thus not affecting lazy loading images that are currently loading with just a root margin. *Gecko*: Positive (https://github.com/w3c/IntersectionObserver/issues/431) https://bugzilla.mozilla.org/show_bug.cgi?id=1864794 *WebKit*: Positive ( https://github.com/w3c/IntersectionObserver/issues/431#issuecomment-930602435 ) https://bugs.webkit.org/show_bug.cgi?id=264864 *Web developers*: Positive ( https://bugs.chromium.org/p/chromium/issues/detail?id=1391989) *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? None Debuggability None Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, Chrome OS, 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/html/semantics/embedded-content/the-img-element?label=master&label=experimental&aligned&q=image-loading-lazy-in- Flag name on chrome://flagsLazyLoadScrollMargin Finch feature nameNone Non-finch justification This feature is behind an enabled-by-default flag that can be disabled if needed. Requires code in //chrome?False Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1391989 Estimated milestones Shipping on desktop 121 DevTrial on desktop 121 Shipping on Android 121 DevTrial on Android 121 Shipping on WebView 121 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). None Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5106926245642240 Links to previous Intent discussionsIntent to prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvtrmHkoOpTuD2eZYVOyFuAhP8ZFVoTuNBS8zYTVY%3DTaaQ%40mail.gmail.com 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 blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvsUb0GEG9WNWRN7Akkowjm03gLj%2Biiq5rG8%2BzdAWMBTNA%40mail.gmail.com.
