User Timing L3

User Timing Level 3 extends the existing User Timing API to enable two new use cases: 1. Developers can pass custom timestamps to performance.measure() and performance.mark(), so as to conduct measurement across arbitrary timestamps. 2. Developers can report arbitrary metadata with performance.mark() and performance.measure(), which provides rich data to analytics via a standardized API.


Working draft or equivalent

Status in Chromium


In development (tracking bug)

Consensus & Standardization

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

  • No public signals
  • Public support
  • No public signals
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Last updated on 2019-04-09