Web features explorer - Shared worker extended lifetime

Web features explorer

The extendedLifetime option of the SharedWorker() constructor gives shared workers extra time to perform operations after all pages using it have been navigated away from or closed.

Browser support

Chrome 148 Released on 2026-05-05
Chrome Android 148 Released on 2026-05-05
Edge 148 Released on 2026-05-07
Firefox Not supported Bugs: 2021443
Firefox for Android Not supported
Safari Not supported
Safari on iOS Not supported

MDN documentation

No MDN documentation found. You can search for the feature on MDN. If you believe that MDN has no documentation about this feature, you can open an issue on MDN's GitHub repository.

Specifications

HTML (#dom-sharedworkeroptions-extendedlifetime), from HTML Workstream (WHATWG).

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