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Layout Instability Shifted Element Surfacing

Category

Performance

Type

New or changed feature

Status

Enabled by default (Chrome 84)

Intent stage

Shipped

Summary

Extends the layout instability API with information about specific DOM element(s) that experienced a shift.

Standards & signals

• Specification: https://wicg.github.io/layout-instability/
• Firefox: No signal
• Safari: No signal
• Web developers: Strongly positive — "Gaining access to at least some of the attribution of the shifts would be very useful for anyone that is using the API or reporting on something like CLS."
• Tracking bug: https://bugs.chromium.org/p/chromium/issues/detail?id=1053510

Docs: https://github.com/WICG/layout-instability/blob/master/README.md#source-attribution

Explainers: https://github.com/WICG/layout-instability/blob/master/README.md#source-attribution

View on chromestatus.com