Navigation preload for service workers

This feature is expected to be enabled by default in Chrome 62. An API that enables the browser to send “preload” network requests for navigations before executing the fetch event handler in the service worker that intercepts the target URL. The worker has access to the preload response inside the fetch event handler. Common use cases would be to respond with the preload response directly, or use it to populate the response.

Documentation

Specification

Editor's draft

Status in Chromium

Blink>ServiceWorker


Behind a flag (tracking bug) in:

  • Chrome for desktop release 59
  • Chrome for Android release 59
  • Android WebView release 59
  • Opera release 46
  • Opera for Android release 46

Consensus & Standardization

Owners

Last updated on 2017-08-16