W3C

Performance Timeline and User Timing are W3C Recommendations

The Web Performance Working Group has published two Recommendations today.

  • Performance Timeline, which defines an unified interface to store and retrieve performance metric data. This specification does not cover individual performance metric interfaces.
  • User Timing, which defines an interface to help web developers measure the performance of their applications by giving them access to high precision timestamps.

Learn more about the Rich Web Clients Activity.