Web platform features explorer

The fetchLater() method requests a deferred fetch sent at an unknown time. The browser chooses a reliable time to send the request, ideally when the document is unloaded, and ignores the response. This API is useful for sending beacons to a server without expecting a particular response.

Status

Limited availability

MDN documentation

Fetch API

Specifications

Fetch (#dom-window-fetchlater), from Fetch Workstream (WHATWG).

Browser support

Chrome 135 Released on 2025-04-01
Chrome Android 135 Released on 2025-04-01
Edge 135 Released on 2025-04-04
Firefox ❌ See bugzil.la/1936180 Vendor position : positive
Firefox for Android ❌ See bugzil.la/1936180 Vendor position : positive
Safari ❌ See webkit.org/b/284347 Vendor position : support (concerns: complexity, privacy, integration, venue, API design, maintenance)
Safari on iOS ❌ See webkit.org/b/284347 Vendor position : support (concerns: complexity, privacy, integration, venue, API design, maintenance)

Usage (according to Chrome Platform Status)

~3.364% of page loads. More data at chromestatus.com.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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