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 > > *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/CAOmohS%2BZe0fR9bRcmn11%3D2vF63zt-_qmyyzO825Yoj3T-YFdQA%40mail.gmail.com.
