Contact emailstcap...@chromium.org Explainerhttps://github.com/whatwg/html/issues/4654
Specificationhttps://github.com/whatwg/html/pull/8008 Summary Auto Sizes allows developers to omit the sizes attribute (or set it to sizes=auto) for lazy loaded image elements with srcset. For this use case the image's width should be provided. The browser will use the layout width of the image in order to select the source url from the srcset. Blink componentBlink>Image <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EImage> Motivation The layout size information in sizes is redundant with layout information in CSS, but for images that are critical to initial paint it's necessary to have the information in the HTML. For lazy-loaded images, CSS will usually be available before the image load begins. The browser could take the actual width of the image as specified in CSS, and use that as if it was the image's sizes. Initial public proposalhttps://github.com/whatwg/html/issues/4654 Search tagssizes <https://chromestatus.com/features#tags:sizes>, sizes=auto <https://chromestatus.com/features#tags:sizes=auto>, autosizes <https://chromestatus.com/features#tags:autosizes>, srcset <https://chromestatus.com/features#tags:srcset> TAG review TAG review statusNot applicable Risks Interoperability and Compatibility None since all major browsers (Chrome, Safari and Firefox) indicate that they would be willing to implement it. *Gecko*: Positive (https://github.com/mozilla/standards-positions/issues/650 ) *WebKit*: Positive (https://github.com/WebKit/standards-positions/issues/9) *Web developers*: No signals *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? Debuggability Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ?Yes Flag nameImgAutoSizes Requires code in //chrome?False Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1359051 Estimated milestones DevTrial on desktop 116 DevTrial on Android 116 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5191555708616704 Links to previous Intent discussions 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/CAFxahvsRYQ5-a3vA8jsVTXz%2B5A8_pNcL6GziV3hy5qGqF-FTXg%40mail.gmail.com.
