We're looking for a person or people to help audit MDN to find places we could speed up. Is this you or someone you know? Check out the RFP: https://mzl.la/2IHcMiE

Enables an extension to modify certain global browser settings. Each property of this API is a BrowserSetting object, providing the ability to modify a particular setting.
Because these are global settings, it's possible for extensions to conflict. See the documentation for BrowserSetting.set() for details of how conflicts are handled.

To use this API you need to have the "browserSettings" permission.


Determines whether code running in web pages can display popups in response to user events.
Determines whether the browser cache is enabled or not.
Determines the mouse event that triggers a context menu popup.
Read the value of the browser's home page.
Determines how the browser treats animated images.
Read the value of the browser's new tab page.
Determines whether bookmarks are opened in the current tab or a new tab.
Determines whether search results are opened in the current tab or a new tab.
Configures proxy settings.
Prevents websites from showing notifications using the Notification Web API.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
allowPopupsForUserEvents No No5757 No
cacheEnabled No No5656 No
contextMenuShowEvent No No5959 No
homepageOverride No No5757 No
imageAnimationBehavior No No5757 No
newTabPageOverride No No5757 No
openBookmarksInNewTabs No No5959 No
openSearchResultsInNewTabs No No5959 No
proxyConfig No No5959 No
webNotificationsDisabled No No5858 No

Document Tags and Contributors

 Contributors to this page: Robbendebiene, wbamberg, hellosct1
 Last updated by: Robbendebiene,