Web platform features explorer

Event timing

The event and first-input performance entries and the PerformanceEventTiming API measures the latency of user input events, such as mouse clicks or keypresses. They're used to calculate Interaction to Next Paint (INP), a common metric for perceived responsiveness.

Status

Limited availability

MDN documentation

Specifications

Browser support

  • Chrome 76 Released on 2019-07-30
  • Chrome Android 76 Released on 2019-07-30
  • Edge 79 Released on 2020-01-15
  • Firefox 89 Released on 2021-06-01
  • Firefox for Android 89 Released on 2021-06-01
  • Safari ❌ Vendor position : unknown (concerns: duplication, interoperability)
  • Safari on iOS ❌ Vendor position : unknown (concerns: duplication, interoperability)

Baseline availability blocked since June 2021 by Safari (52 months)

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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