An API that extends Service Workers with an onsync event.


Editor's draft

Status in Chromium


Enabled by default (tracking bug) in:

  • Chrome for desktop release 49
  • Chrome for Android release 49

Consensus & Standardization

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

  • In development
  • No signal
  • No signal
  • Positive



Web developer views: Positive because we had multiple confirmations that the use cases this API intend to address are important to developers working on high profile web properties.

Last updated on 2020-11-09