Specifies the reason a tab was muted or unmuted.


Values of this type are strings. Possible values are:

Tab capture started, forcing a muted state change.
An extension set the muted state. If this is the reason, extensionId in tabs.mutedInfo will contain the ID of the extension responsible.
The user set the muted state.

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxOperaSafariFirefox for Android
MutedInfoReasonChrome Full support YesEdge Full support 79Firefox Full support 47Opera Full support YesSafari No support NoFirefox Android No support No


Full support  
Full support
No support  
No support

This API is based on Chromium's chrome.tabs API. This documentation is derived from tabs.json in the Chromium code.

Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.