Background Fetch API

Background Fetch API provides a service worker based download and upload mechanism which is persistent across service worker and browser restarts. The system will provide a developer-controllable interface to schedule, query, pause, and cancel background downloads and uploads. After a scheduled fetch completes, the system will notify the developer of the outcome of the operation. In-progress fetches will be visible to users in a notification.


The Origin Trial launched in Chrome 71 only supports requests without a body, and does not yet provide access to the responses of in-progress fetches.



Status in Chromium


Origin trial (tracking bug) in:

  • Chrome for desktop release 71
  • Chrome for Android release 71

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No public signals
  • No public signals
  • No public signals
  • Strongly positive


Last updated on 2018-10-17