The  Web Performance Working Group  invites implementations of a new Candidate Recommendation of  Resource Timing . This specification defines interfaces for web applications to access the complete timing information for resources in a document, as user latency is an important quality benchmark for Web Applications.

24 June 2014 The Web Performance Working Group has published a Last Call Working Draft of Beacon . This specification defines an interoperable means for site developers to asynchronously transfer small HTTP data from the User Agent to a web server. Comments are welcome through 29 July 2014 . The Web Performance Working Group also updated the Candidate Recommendation of Resource Timing . This specification defines an interface for web applications to access the complete timing information for resources in a document. Learn more about the Rich Web Client Activity .

The Web Performance Working Group has published the First Public Working Draft of Resource Timing. This specification defines an interface for web applications to access timing information related to HTML elements. User latency is an important quality benchmark for Web Applications. While JavaScript-based mechanisms can provide comprehensive instrumentation for user latency measurements within an application, in many cases, they are unable to provide a complete end-to-end latency picture. While the Navigation Timing specification address part of the problem by providing timing information associated with a navigation, this document introduces the ResourceTiming interface to allow Javascript mechanisms to collect complete timing information related to resources on a document. Learn more about the Rich Web Client Activity .