Contact emails
[email protected] , [email protected]

Explainer
https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/PerformanceScrollTiming/explainer.md

Specification
Spec to be developed in WICG once the API shape stabilizes.

Summary
The Scroll Timing API exposes detailed, per-scroll performance timing 
information to web developers. It enables precise measurement of scroll 
responsiveness, latency, and frame production during user-initiated scrolling, 
filling a long-standing observability gap in web performance diagnostics.


Blink component
Blink>PerformanceAPI<https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EPerformanceAPIs%22>

Web Feature ID
Missing feature

Motivation
Scrolling is one of the most common and latency-sensitive user interactions on 
the web, yet developers currently lack standardized APIs to measure scroll 
performance beyond coarse heuristics. Existing signals (e.g. long tasks, event 
timing, RAF timing) are insufficient to attribute scroll jank, delayed visual 
updates, or compositor-related delays.
This API enables developers to identify, diagnose, and regress-test scroll 
performance issues, and aligns with ongoing efforts to improve input 
responsiveness and UX metrics across browsers.
Full details, including examples and non-goals, are described in the explainer.
Initial public proposal
Unspecified

Goals for experimentation
None

Requires code in //chrome?
False

Tracking bug
https://issues.chromium.org/issues/504094429

Estimated milestones
No milestones specified


Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5076359002062848

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