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Explainer https://github.com/WICG/nav-speculation/blob/main/prerendering-cross-origin-iframes.md Specification https://wicg.github.io/nav-speculation/prerendering.html Summary Prerenders cross-origin iframes with an opt-in response header. Browsers will now prerender all cross-origin frames if the top-level frame's HTTP response includes the Supports-Loading-Mode: prerender-cross-origin-frames. Blink component Blink Motivation By default, navigational prerendering delays the loading of all cross-origin iframes until the referring page activates the prerendered page. However, there are some cases where cross-origin iframes are particularly important to an application, such that delaying them negates many of the benefits of prerendering. Initial public proposal None TAG review None TAG review status Not applicable Risks Interoperability and Compatibility None Gecko: No signal WebKit: No signal Web developers: Positive Our partners show interests in having this feature. 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 The cross-origin iframe prerendering should be debuggable as well as top frame's one: https://developer.chrome.com/docs/devtools/application/debugging-speculation-rules#prerender Is this feature fully tested by web-platform-tests? Yes Flag name on about://flags None Finch feature name Prerender2CrossOriginIframes Requires code in //chrome? False Estimated milestones No milestones specified Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5112398709129216?gate=5179872041369600 This intent message was generated by Chrome Platform Status. -- 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/68b670ba.050a0220.270bc4.0593.GAE%40google.com.
