W3C

Web Performance Current Status

This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title links to the most recent version of a document.

Completed Work

W3C Recommendations have been reviewed by W3C Members, by software developers, and by other W3C groups and interested parties, and are endorsed by the Director as Web Standards. Learn more about the W3C Recommendation Track.

Group Notes are not standards and do not have the same level of W3C endorsement.

Standards

2013-12-12

Performance Timeline

This specification defines an interface for web applications to access timing information related to navigation and elements. It is used by other specifications, like User Timing.

2013-12-12

User Timing

This specification defines an interface to help web developers measure the performance of their applications by giving them access to high precision timestamps.

2013-10-29

Page Visibility (Second Edition)

This specification 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.

2012-12-17

Navigation Timing

This document provides an interface for web applications to access timing information related to navigation and elements.

2012-12-17

High Resolution Time

This specification defines an interface that provides the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments.

Drafts

Below are draft documents: Candidate Recommendations, Last Call Drafts, other Working Drafts . Some of these may become Web Standards through the W3C Recommendation Track process. Others may be published as Group Notes or become obsolete specifications.

Candidate Recommendations

2014-06-24

Resource Timing

This specification defines an interface for web applications to access timing information related to HTML elements.

2013-10-31

Timing control for script-based animations

This document defines an API web page authors can use to write script-based animations where the user agent is in control of limiting the update rate of the animation.

Last Call Drafts

2014-06-24

Beacon

This specification defines an interoperable means for site developers to asynchronously transfer data from the user agent to a web server, with the user agent taking the responsibility to eventually send the data.

2013-12-03

High Resolution Time Level 2

This specification defines a JavaScript interface that provides the current time in sub-millisecond resolution and such that it is not subject to system clock skew or adjustments.

Other Working Drafts

2014-10-21

Resource Hints

Resource Hints provides hints that authors may use to assist the user agent in fetching resources to improve page performance.

2014-03-25

Navigation Timing 2

This document provides an interface for web applications to access timing information related to navigation and elements.

2014-02-11

Navigation Error Logging

Navigation Error Logging defines an API to store and retrieve error data related to the previous navigations of a document.

2013-10-29

Resource Priorities

This specification defines a means for site developers to programmatically give the User Agent hints on the download priority of a resource. This will allow User Agents to more efficiently manage the order in which resources are downloaded.