W3C Invites Implementations of Page Visibility, Performance Timeline, and User Timing

26 July 2012

The Web Performance Working Group invites implementation of three Candidate Recommendations:

• Page Visibility which defines a means for site developers to programmatically determine the current visibility state of the page in order to develop power and CPU efficient web applications.
• 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 Client Activity.