Monitoring event latency requires an event listener. This precludes measuring event latency early in page load, and adds unnecessary performance overhead. The Event Timing API will enable web developers to measure event latency both before and after the page load.



Specification link

Specification being incubated in a Community Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • No signal
  • Positive


Intent to Prototype url

Intent to Prototype thread

Last updated on 2021-12-13