Chrome 133 supports ShadowRoot referenceTarget

[meyerweb]

Summary

Adds the new referencetarget attribute to <template> and property to the ShadowRoot API.

Supporting details

• Explainer: https://github.com/WICG/webcomponents/blob/gh-pages/proposals/reference-target-explainer.md
• HTML progress: Reference Target whatwg/html#10707
• WHATNOT progress: Upcoming WHATNOT meeting on 2025-09-11 whatwg/html#11648 (comment)
• Chrome implementation status: https://chromestatus.com/feature/5188237101891584
• Positive signal from Mozilla: https://mozilla.github.io/standards-positions/#1035
• Plans for WebKit implementation: https://blogs.igalia.com/mrego/solving-cross-root-aria-issues-in-shadow-dom/

[github-actions]

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[caugner]

According to https://chromestatus.com/feature/5188237101891584, this feature was only in Origin Trial from Chrome 133 to 135. Can you clarify if these features landed unconditionally in Chrome Stable?

[meyerweb]

According to https://chromestatus.com/feature/5188237101891584, this feature was only in Origin Trial from Chrome 133 to 135. Can you clarify if these features landed unconditionally in Chrome Stable?

They’re in current Chrome (143) behind the experimental web platform features flag. I’m not certain, but my understanding is that the feature was never backed out.