LGTM to extend for 3 more months. Are you anticipating that after that you'll be ready to ship?
Is there a spec issue <https://github.com/WICG/nav-speculation/issues> tracking the nested frames case? I didn't see one in a quick scan, and I notice TAG is asking about it as well. On Thu, Jul 2, 2026 at 1:54 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> > > *Web Feature ID* > Missing feature > > *TAG review* > https://github.com/w3ctag/design-reviews/issues/1207 > > *TAG review status* > Not applicable > > *Origin Trial Name* > Prerendering cross-origin iframes > > *Goals for experimentation* > Gather feedback from web authors who already are interested in this > feature. > > *Chromium Trial Name* > Prerender2CrossOriginIframes > > *Origin Trial documentation link* > > https://github.com/WICG/nav-speculation/blob/main/prerendering-cross-origin-iframes.md > > *WebFeature UseCounter name* > kPrerender2CrossOriginIframes > > *Risks* > > > *Interoperability and Compatibility* > The entire speculative loading feature is a progressive enhancement, so in > general risks are low in this area. > > *Gecko*: No signal ( > https://github.com/mozilla/standards-positions/issues/1376) > > *WebKit*: No signal ( > https://github.com/WebKit/standards-positions/issues/636) > > *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? > *No information provided* > > > *Reason this experiment is being extended* > Partner requires additional implementation and assessment about the nested > frames case. > > *Ongoing technical constraints* > *No information provided* > > *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 > > *Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?* > No > > *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* > "prerender2-cross-origin-iframes" from M148 > > *Finch feature name* > Prerender2CrossOriginIframes > > *Requires code in //chrome?* > False > > *Tracking bug* > https://issues.chromium.org/issues/440387014 > > *Estimated milestones* > Origin trial desktop first 147 > Origin trial desktop last 152 > Origin trial extension 1 end milestone 158 > > *Link to entry on the Chrome Platform Status* > https://chromestatus.com/feature/5112398709129216?gate=5151856880910336 > > *Links to previous Intent discussions* > Intent to Prototype: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68b670ba.050a0220.270bc4.0593.GAE%40google.com > Intent to Experiment: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAAEV3p%3DzhNhfOpe8x%3DRKgxYFS9GCq_q-c8knZYRBRuijQ27o8w%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 [email protected]. > To view this discussion visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a45fcf5.198129d7.1d0cd0.0014.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/6a45fcf5.198129d7.1d0cd0.0014.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-q6JUWxYveRnWCh6bbR_WFizAobNWGQp%2B6UP%2BpisEGow%40mail.gmail.com.
