Web platform features explorer

Event timing

Limited availability
Tags: api Groups: Performance

The event and first-input performance entries and the PerformanceEventTiming API measures the latency of user input events, such as mouse clicks or keypresses, and the latency of the first user input. First Input Delay (FID) is a common metric for perceived responsiveness.

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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 (concerns: duplication, interoperability)
  • Safari on iOS ❌ Vendor position (concerns: duplication, interoperability)

Baseline availability blocked since June 2021 by Safari (49 months)

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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