Web Performance Working Group - Publications

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.

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

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.

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.

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

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

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.

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.

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.

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

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

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

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

This document defines a HTTP Client Hint header to surface device capability for memory i.e. device RAM, in order to enable web apps to customize content depending on device memory constraints.

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

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

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

The reporting API provides a generic reporting framework which allows Web developers to associate a set of named reporting endpoints with an origin. Various platform features (like Content Security Policy, Network Error Reporting, and others) will use these endpoints to deliver feature-specific reports in a consistent manner.

The requestIdleCallback method is a more appropriate way for scheduling background tasks during times when the browser would otherwise be idle.

Server Timing, part of the performance timeline metrics, provides API access to request-response cycle performance metrics communicated from the server to the user agent.

This document defines an API that provides web page authors with insights into the latency of certain events triggered by user interactions.

This document defines an API that enables monitoring the largest paint an element triggered on screen.

This document defines an API that web page authors can use to detect presence of “long tasks” that monopolize the UI thread for extended periods of time and block other critical tasks from being executed - e.g. reacting to user input.

This document defines an API that can be used to capture a series of key moments (First Paint, First Contentful Paint) during pageload which developers care about.

This registry is intended to provide a central location for enumerating identified interface types of PerformanceEntry objects, which contain various data metrics for the the full lifecycle of a web application.