Web features explorer

Background sync

Limited availability

This feature has received a negative standards position from at least one browser vendor — It's very unlikely to ever become Baseline in this current form.

The background synchronization API registers a service worker callback to run only when the device is no longer offline. You can use this to let users continue using your app while offline and synchronize with a server after reconnecting.

Browser support

  • Chrome 49 Released on 2016-03-02
  • Chrome Android 49 Released on 2016-03-09
  • Edge 79 Released on 2020-01-15
  • Firefox Not supported Position: negative
  • Firefox for Android Not supported Position: negative
  • Safari Not supported Bugs: 182565
  • Safari on iOS Not supported Bugs: 182565

MDN documentation

Specifications

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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