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

Baseline Newly Available (since 2025-12-12)

This feature is expected to reach Baseline Widely Available status on: 2028-06-12

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 26.2 Released on 2025-12-12
  • Safari on iOS 26.2 Released on 2025-12-12

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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