On Mon, Nov 9, 2026 at 11:55 PM Yoav Weiss (@Shopify) < [email protected]> wrote:
> What milestones are you planning to run the experiment in? > > On Mon, Nov 9, 2026 at 11:47 PM Mason Freed <[email protected]> wrote: > >> *Contact emails* >> [email protected] >> >> *Explainer* >> https://github.com/mfreed7/split-tabs >> >> *Specification* >> *No information provided* >> >> *Summary* >> Split screen scenarios are increasingly common. In addition to dual >> screen devices (i.e. physical split screen), many browsers have a split tab >> (i.e. virtual split screen) feature, where two tabs are tiled side-by-side >> within a single browser window. When using a split tab, there are multiple >> cases in which users want to open a link and view it side-by-side with the >> source page. Today there is no way for a web author to request that a >> navigation open into a split tab. The existing navigation targets (_blank, >> _self, _parent, _top) cannot express this, and windowFeatures only offers >> popup, which opens a separate, detached browser window. Without popup, >> window.open() opens the content as a new full-size tab in the current >> window, which is the only other option available. This feature provides >> methods (imperative and declarative) for web authors to request that a link >> open in a split tab, alongside the current page. >> >> *Blink component* >> Blink>DOM >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EDOM%22> >> >> *Web Feature ID* >> Missing feature >> >> *Search tags* >> window.open <https://chromestatus.com/features#tags:window.open>, split >> tab <https://chromestatus.com/features#tags:split%20tab> >> >> *TAG review* >> https://github.com/w3ctag/design-reviews/issues/1309 >> >> *TAG review status* >> Pending >> >> *Goals for experimentation* >> None >> >> *Risks* >> >> >> *Interoperability and Compatibility* >> There should be no compat risks, since these are new window feature >> values and a new attribute. (Extremely small, and acceptable, risk that >> existing content already uses the `windowFeatures` attribute.) The API also >> includes provisions for feature detection and easy progressive enhancement, >> such as the ability to explicitly fall back to popup behavior. >> >> *Gecko*: No signal ( >> https://github.com/mozilla/standards-positions/issues/1481) >> >> *WebKit*: No signal ( >> https://github.com/WebKit/standards-positions/issues/741) >> >> *Web developers*: Positive Private feedback is quite positive. >> >> *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* >> >> >> *Ongoing technical constraints* >> *No information provided* >> >> *Debuggability* >> *No information provided* >> >> *Will this feature be supported on all six Blink platforms (Windows, Mac, >> Linux, ChromeOS, Android, and Android WebView)?* >> No >> > Can you elaborate on that? > >> >> *Is this feature fully tested by web-platform-tests >> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >> No >> >> >> *Flag name on about://flags* >> *No information provided* >> >> *Finch feature name* >> WindowOpenSplitTab >> >> *Requires code in //chrome?* >> False >> >> *Tracking bug* >> https://crbug.com/570412924 >> >> *Estimated milestones* >> DevTrial on desktop 158 >> DevTrial on Android 158 >> >> *Link to entry on the Chrome Platform Status* >> https://chromestatus.com/feature/5136319775899648?gate=6263386169016320 >> >> *Links to previous Intent discussions* >> Intent to Prototype: >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM%3DNeDiY8jf6ETLNuj%2BXk%3DGJ89_NhUebFBBdNV9qMknZtiQhbQ%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/CAM%3DNeDh3N94qwUvsXkO-PMoDGKzHt5F3AeYbhjAJyWg1_1H6CA%40mail.gmail.com >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAM%3DNeDh3N94qwUvsXkO-PMoDGKzHt5F3AeYbhjAJyWg1_1H6CA%40mail.gmail.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/CAOmohSKseORmNd_ca5w6JZjkvDEL-Rc1pTNo3fLHW12P_8jz2A%40mail.gmail.com.
