Web platform features explorer - Navigation timing confidence

The confidence property of a navigation timing entry describes whether the navigation metric is likely to be representative the page's performance (high confidence) or affected by transient conditions, such as browser startup (low confidence).

Status

Limited availability

MDN documentation

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Specifications

Navigation Timing Level 2 (#sec-performance-timing-confidence), from Web Performance Working Group (W3C).

Browser support

Chrome 145 Released on 2026-02-10
Chrome Android 145 Released on 2026-02-10
Edge 145 Released on 2026-02-14
Firefox ❌
Firefox for Android ❌
Safari ❌
Safari on iOS ❌

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