Makes sense to me as an opt-in, thanks for working on this Yoichi! Rick
On Tue, Sep 2, 2025 at 12:21 AM Chromestatus < [email protected]> wrote: > Contact emails [email protected] > > 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 > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%22> > > 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 > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> > ? 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 > <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/68b670ba.050a0220.270bc4.0593.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68b670ba.050a0220.270bc4.0593.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/CAFUtAY-eaBY1OpCnbW8vbd09AGCbpXpBSSHoYc_yG1ZbuMfNnw%40mail.gmail.com.
