browserSettings

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.

browserSettings.allowPopupsForUserEvents

Determines whether code running in web pages can display popups in response to user events.

browserSettings.cacheEnabled

Determines whether the browser cache is enabled or not.

browserSettings.closeTabsByDoubleClick

Determines whether the selected tab can be closed with a double click.

browserSettings.colorManagement

Determines various settings for color management.

browserSettings.contextMenuShowEvent

Determines the mouse event that triggers a context menu popup.

browserSettings.ftpProtocolEnabled

Determines whether the FTP protocol is enabled.

browserSettings.homepageOverride

Read the value of the browser's home page.

browserSettings.imageAnimationBehavior

Determines how the browser treats animated images.

browserSettings.newTabPageOverride

Reads the value of the browser's new tab page.

browserSettings.newTabPosition

Controls the position of newly opened tabs relative to already open tabs.

browserSettings.openBookmarksInNewTabs

Determines whether bookmarks are opened in the current tab or a new tab.

browserSettings.openSearchResultsInNewTabs

Determines whether search results are opened in the current tab or a new tab.

browserSettings.openUrlbarResultsInNewTabs

Determines whether address bar autocomplete suggestions are opened in the current tab or a new tab.

browserSettings.overrideContentColorScheme

Controls whether to override the browser theme (light or dark) when setting pages' preferred color scheme.

browserSettings.overrideDocumentColors

Controls whether the user-chosen colors override the page's colors.

browserSettings.useDocumentFonts

Controls whether the browser will use the fonts specified by a web page or use only built-in fonts.

browserSettings.webNotificationsDisabled

Prevents websites from showing notifications using the Notification Web API.

browserSettings.zoomFullPage

Controls whether zoom is applied to the entire page or to text only.

browserSettings.zoomSiteSpecific

Controls whether page zoom is applied on a per-site or per-tab basis. If privacy.websites.resistFingerprinting is true, this setting has no effect and zoom is applied on a per-tab basis.