Browser support for JavaScript APIs

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`Alarm`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`clear`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`clearAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`create`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45 Full support 45 No support 45 — 64 Notes Notes Alarms scheduled for a time in the past never fire.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48 Full support 48 No support 48 — 64 Notes Notes Alarms scheduled for a time in the past never fire.
`get`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`getAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`onAlarm`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48

Legend

Full support: Full support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`BookmarkTreeNode`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`BookmarkTreeNode.type`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`BookmarkTreeNodeType`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`BookmarkTreeNodeUnmodifiable`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`CreateDetails`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`CreateDetails.type`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`create`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`get`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getChildren`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getRecent`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getSubTree`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getTree`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`move`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onChildrenReordered`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onCreated`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onImportBegan`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onImportEnded`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onMoved`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onRemoved`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`remove`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`removeTree`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android No support No
`search`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android No support No
`update`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ColorArray`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`ImageDataType`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`disable`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`enable`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`getBadgeBackgroundColor`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes Always returns a red `ColorArray`.	Firefox Android No support No
`getBadgeText`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`getBadgeTextColor`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No
`getPopup`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 57
`getTitle`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`isEnabled`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`onClicked`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`onClicked.OnClickData`	Chrome No support No	Edge No support No	Firefox Full support 72	Opera No support No	Safari No support No	Firefox Android No support No
`onClicked.tab`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`openPopup`	Chrome Full support 67 Disabled Full support 67 Disabled Disabled From version 67: this feature is behind the `#extension-apis` preference (needs to be set to `Enabled`). To change preferences in Chrome, visit chrome://flags.	Edge Full support 79 Disabled Full support 79 Disabled Disabled From version 79: this feature is behind the `#extension-apis` preference (needs to be set to `Enabled`).	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`setBadgeBackgroundColor`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Full support 45 No support 45 — 58 Notes Notes Tab-specific badge background color is not cleared when a new page is loaded.	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes The API exists, but has no effect.	Firefox Android No support No
`setBadgeBackgroundColor`: The `color` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`setBadgeBackgroundColor`: The `color` property of the `details` parameter can be set to a string.	Chrome Full support Yes	Edge Full support 79	Firefox Full support Yes Notes Full support Yes Notes Notes Before Firefox 59, invalid color strings behaved as `null`.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`setBadgeText`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Full support 45 No support 45 — 58 Notes Notes Tab-specific badge text is not cleared when a new page is loaded.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`setBadgeText`: The `text` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`setBadgeTextColor`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No
`setIcon`	Chrome Full support Yes Notes Full support Yes Notes Notes Before Chrome 23, `path` couldn't specify multiple icon files, but had to be a string specifying a single icon path.	Edge Full support 14 Notes Full support 14 Notes Notes This call is not persisted. Notes The `imageData` parameter is not accepted. Notes The `path` parameter is required.	Firefox Full support 45 Full support 45 No support 45 — 58 Notes Notes Tab-specific icons are not cleared when a new page is loaded.	Opera Full support 15	Safari Full support 14	Firefox Android No support No
`setIcon.imageData`	Chrome Full support 23	Edge Full support 79	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android No support No
`setIcon`: The `path` and `imageData` properties of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No
`setPopup`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Full support 45 No support 45 — 58 Notes Notes Tab-specific popups are not cleared when a new page is loaded.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 57 Full support 57 No support 57 — 58 Notes Notes Tab-specific popups are not cleared when a new page is loaded.
`setPopup`: The `popup` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No
`setTitle`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45 Full support 45 No support 45 — 58 Notes Notes Tab-specific titles are not cleared when a new page is loaded.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55 Full support 55 No support 55 — 58 Notes Notes Tab-specific titles are not cleared when a new page is loaded.
`setTitle`: The `title` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No

Legend

Full support: Full support
Partial support: Partial support
No support: No support
See implementation notes.: See implementation notes.
User must explicitly enable this feature.: User must explicitly enable this feature.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`allowPopupsForUserEvents`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`cacheEnabled`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android Full support 56
`closeTabsByDoubleClick`	Chrome No support No	Edge No support No	Firefox Full support 61	Opera No support No	Safari No support No	Firefox Android No support No
`contextMenuShowEvent`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`ftpProtocolEnabled`	Chrome No support No	Edge No support No	Firefox Full support 72	Opera No support No	Safari No support No	Firefox Android No support No
`homepageOverride`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`imageAnimationBehavior`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`newTabPageOverride`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`newTabPosition`	Chrome No support No	Edge No support No	Firefox Full support 61	Opera No support No	Safari No support No	Firefox Android Full support 61 Notes Full support 61 Notes Notes This setting can be changed but has no effect.
`openBookmarksInNewTabs`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`openSearchResultsInNewTabs`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`openUrlbarResultsInNewTabs`	Chrome No support No	Edge No support No	Firefox Full support 61	Opera No support No	Safari No support No	Firefox Android Full support 61
`overrideDocumentColors`	Chrome No support No	Edge No support No	Firefox Full support 61	Opera No support No	Safari No support No	Firefox Android Full support 61
`useDocumentFonts`	Chrome No support No	Edge No support No	Firefox Full support 61	Opera No support No	Safari No support No	Firefox Android Full support 61
`webNotificationsDisabled`	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android Full support 58
`zoomFullPage`	Chrome No support No	Edge No support No	Firefox Full support 75	Opera No support No	Safari No support No	Firefox Android No support No
`zoomSiteSpecific`	Chrome No support No	Edge No support No	Firefox Full support 75	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`DataTypeSet.cache`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`DataTypeSet.cookies`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`DataTypeSet.downloads`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`DataTypeSet.fileSystems`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.formData`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`DataTypeSet.history`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 56
`DataTypeSet.indexedDB`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 57	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.localStorage`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 57	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.passwords`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.pluginData`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.serverBoundCertificates`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DataTypeSet.serviceWorkers`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No
`RemovalOptions.hostnames`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`RemovalOptions.originTypes`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`RemovalOptions.since`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53 Notes Full support 53 Notes Notes `since` is not supported with the following data types: `cache`, `indexedDB`, `localStorage`, and `serviceWorkers`.	Opera Full support Yes	Safari No support No	Firefox Android Full support 56 Notes Full support 56 Notes Notes `since` is not supported with the following data types: `cache`, `indexedDB`, `localStorage`, and `serviceWorkers`.
`remove`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53 Notes Full support 53 Notes Notes Specifying `dataTypes.history` will also remove download history and service workers.	Opera Full support Yes	Safari No support No	Firefox Android Full support 57 Notes Full support 57 Notes Notes Specifying `dataTypes.history` will also remove download history and service workers.
`removeCache`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53 Notes Full support 53 Notes Notes `removalOptions.since` is not supported.	Opera Full support Yes	Safari No support No	Firefox Android Full support 57 Notes Full support 57 Notes Notes `removalOptions.since` is not supported.
`removeCookies`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`removeDownloads`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 57
`removeFormData`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 57
`removeHistory`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53 Notes Full support 53 Notes Notes This function also removes download history and service workers.	Opera Full support Yes	Safari No support No	Firefox Android No support No Notes No support No Notes Notes See bug 1363010. `browser.history.remove(options, {history:true})` can be used instead.
`removeLocalStorage`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 57 Notes Full support 57 Notes Notes `removalOptions.since` is not supported.	Opera Full support Yes	Safari No support No	Firefox Android No support No Notes No support No Notes Notes The method is defined but returns a rejected promise.
`removePasswords`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No Notes No support No Notes Notes See bug 1363012.
`removePluginData`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No
`settings`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android Full support 56

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`canonicalURL`	Chrome No support No	Edge No support No	Firefox Full support 72	Opera No support No	Safari No support No	Firefox Android No support No
`getLastChecked`	Chrome No support No	Edge No support No	Firefox Full support 68	Opera No support No	Safari No support No	Firefox Android No support No
`getState`	Chrome No support No	Edge No support No	Firefox Full support 68	Opera No support No	Safari No support No	Firefox Android No support No
`onConnectivityAvailable`	Chrome No support No	Edge No support No	Firefox Full support 68	Opera No support No	Safari No support No	Firefox Android No support No
`onStateChanged`	Chrome No support No	Edge No support No	Firefox Full support 68	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`setImageData`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`Command`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`getAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`onCommand`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48 Notes Full support 48 Notes Notes Before version 63, the `onCommand` listener was not treated as a handler for a user action.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`reset`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android No support No
`update`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`RegisteredContentScript`	Chrome No support No Notes No support No Notes Notes There is a polyfill available.	Edge No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Full support 59	Opera No support No	Safari No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Android Full support 59
`RegisteredContentScript.unregister`	Chrome No support No Notes No support No Notes Notes There is a polyfill available.	Edge No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Full support 59	Opera No support No	Safari No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Android Full support 59
`register`	Chrome No support No Notes No support No Notes Notes There is a polyfill available.	Edge No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Full support 59	Opera No support No	Safari No support No Notes No support No Notes Notes There is a polyfill available.	Firefox Android Full support 59

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ContextualIdentity.cookieStoreId`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android Full support 53
`ContextualIdentity.color`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android Full support 53
`ContextualIdentity.colorCode`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`ContextualIdentity.icon`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android Full support 53
`ContextualIdentity.iconUrl`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`ContextualIdentity.name`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android Full support 53
`create`	Chrome No support No	Edge No support No	Firefox Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled.	Opera No support No	Safari No support No	Firefox Android Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled.
`get`	Chrome No support No	Edge No support No	Firefox Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.	Opera No support No	Safari No support No	Firefox Android Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.
`onCreated`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`onRemoved`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`onUpdated`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`query`	Chrome No support No	Edge No support No	Firefox Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled.	Opera No support No	Safari No support No	Firefox Android Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled.
`remove`	Chrome No support No	Edge No support No	Firefox Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.	Opera No support No	Safari No support No	Firefox Android Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.
`update`	Chrome No support No	Edge No support No	Firefox Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.	Opera No support No	Safari No support No	Firefox Android Full support 53 Notes Full support 53 Notes Notes Before version 57, this method resolves its promise with `false` if the contextual identities feature is disabled. Notes Before version 57, this method resolves its promise with `null` if the given identity was not found.

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`Cookie`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`Cookie.firstPartyDomain`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`Cookie.sameSite`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 63	Opera No support No	Safari Full support 14 Notes Full support 14 Notes Notes Only supports explicit.	Firefox Android Full support 63
`CookieStore`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`OnChangedCause`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`get`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes Provides access to cookies from private browsing mode and container tabs since version 52.	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes HTTPOnly cookies are not retrieved.	Firefox Android Full support 48
`get.firstPartyDomain`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`getAll`	Chrome Full support Yes	Edge Full support 14 Notes Full support 14 Notes Notes If no URL is provided, cookies are retrieved only for URLs in currently opened tabs. In Chrome, this gets all cookies on a user's machine.	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 52, the 'tabIds' list was empty and only cookies from the default cookie store were returned. From version 52 onwards, this has been fixed and the result includes cookies from private browsing mode and container tabs.	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes Only the cookies in the default cookie store are retrieved. Notes HTTPOnly cookies are not retrieved.	Firefox Android Full support 48
`getAll.firstPartyDomain`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`getAllCookieStores`	Chrome Full support Yes	Edge Full support 14 Notes Full support 14 Notes Notes Always returns the same default cookie store with ID 0. All cookies belong to this store.	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 52, only the default cookie store was visible. From version 52 onwards, the cookie stores for private browsing mode and container tabs are also readable.	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes Always returns the same default cookie store with ID 0.	Firefox Android Full support 48
`onChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`remove`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 56, this function did not remove cookies from private browsing mode. From version 56 onwards this is fixed.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes Before version 56, this function did not remove cookies from private browsing mode. From version 56 onwards this is fixed.
`remove.firstPartyDomain`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`sameSiteStatus`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 63	Opera No support No	Safari Full support 14 Notes Full support 14 Notes Notes Only supports explicit.	Firefox Android Full support 63
`set`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 56, this function did not modify cookies in private browsing mode. From version 56 onwards this is fixed.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes Before version 56, this function did not modify cookies in private browsing mode. From version 56 onwards this is fixed.
`set.firstPartyDomain`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android Full support 59
`set.sameSite`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 63	Opera No support No	Safari Full support 14 Notes Full support 14 Notes Notes Only supports explicit.	Firefox Android Full support 63

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`inspectedWindow.eval`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android No support No
`inspectedWindow.reload`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android No support No
`inspectedWindow.tabId`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android No support No
`network.getHAR`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 60 Notes Full support 60 Notes Notes The returned HAR log will be empty unless the user has previously activated the browser's network panel at least once.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`network.onNavigated`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android No support No
`network.onRequestFinished`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 61 Full support 61 No support 60 — 61 Notes Notes This event will only start firing after the user has activated the browser's network panel at least once.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`panels.create`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android No support No
`panels.elements`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 56	Opera Full support Yes	Safari No support No	Firefox Android No support No
`panels.onThemeChanged`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android No support No
`panels.themeName`	Chrome Full support 54	Edge Full support 79	Firefox Full support 55	Opera Full support 41	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`resolve`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`BooleanDelta`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DangerType`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DoubleDelta`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.byExtensionId`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.byExtensionName`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.bytesReceived`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.canResume`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.danger`	Chrome Full support Yes	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Always given as 'safe'.	Opera Full support Yes	Safari No support No	Firefox Android No support No Notes No support No Notes Notes Always given as 'safe'.
`DownloadItem.endTime`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`DownloadItem.error`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.estimatedEndTime`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 57	Opera Full support Yes	Safari No support No	Firefox Android Full support 57
`DownloadItem.exists`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.filename`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.fileSize`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.id`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.incognito`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.mime`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.paused`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.referrer`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.startTime`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.state`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.totalBytes`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadItem.url`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadQuery`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`DownloadTime`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`FilenameConflictAction`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`FilenameConflictAction.prompt`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`InterruptReason`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`State`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`StringDelta`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`acceptDanger`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`cancel`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`download`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`download.allowHttpErrors`	Chrome No support No	Edge No support No	Firefox Full support 71	Opera No support No	Safari No support No	Firefox Android No support No
`download.body`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android Full support 52
`download.conflictAction`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`download.filename`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`download.headers`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47 Notes Full support 47 Notes Notes `Referer` headers supported from version 70.	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`download.incognito`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57
`download.method`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47 Notes Full support 47 Notes Notes POST is supported from version 52.	Opera Full support Yes	Safari No support No	Firefox Android Full support 48 Notes Full support 48 Notes Notes POST is supported from version 52.
`download.saveAs`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52 Notes Full support 52 Notes Notes Before version 58, if this option was omitted, Firefox would never show the file chooser, regardless of the value of the browser's preference.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`drag`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`erase`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`getFileIcon`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`onCreated`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`onErased`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`open`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`pause`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`removeFile`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`resume`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`search`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`setShelfEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`show`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`showDefaultFolder`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android Full support 48

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`Event`	Chrome Full support Yes	Edge Partial support 14	Firefox No support No	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`Event.addListener`	Chrome Full support Yes	Edge Full support 14	Firefox No support No	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`Event.addRules`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Event.getRules`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Event.hasListener`	Chrome Full support Yes	Edge Full support 14	Firefox No support No	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`Event.hasListeners`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Event.removeListener`	Chrome Full support Yes	Edge Full support 14	Firefox No support No	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`Event.removeRules`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Rule`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`UrlFilter`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50	Opera Full support Yes	Safari No support No	Firefox Android Full support 50

Legend

Full support: Full support
Partial support: Partial support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ViewType`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`ViewType.sidebar`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera No support No	Safari No support No	Firefox Android No support No
`getBackgroundPage`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`getExtensionTabs` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera No support No	Safari No support No	Firefox Android No support No
`getURL` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`getViews`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes If this is called from a page that is part of a private browsing window, such as a sidebar in a private window or a popup opened from a private window, then its return value will not include the extension's background page.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes If this is called from a page that is part of a private browsing window, such as a sidebar in a private window or a popup opened from a private window, then its return value will not include the extension's background page.
`inIncognitoContext`	Chrome Full support Yes	Edge Full support 17	Firefox Full support 45	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes Always returns false.	Firefox Android Full support 48
`isAllowedFileSchemeAccess`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes Always returns false.	Firefox Android Full support 48
`isAllowedIncognitoAccess`	Chrome Full support Yes	Edge Full support 17	Firefox Full support 48	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes Always returns true.	Firefox Android Full support 48
`lastError`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`onRequest` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onRequestExternal` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`sendRequest` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera No support No	Safari No support No	Firefox Android No support No
`setUpdateUrlData`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
Partial support: Partial support
No support: No support
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ImageDetails`	Chrome Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Edge Partial support 14 Notes Partial support 14 Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Full support 45	Opera Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Safari Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Android Full support 48
`ImageFormat`	Chrome Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Edge Partial support 14 Notes Partial support 14 Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Full support 45	Opera Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Safari Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Android Full support 48
`RunAt`	Chrome Partial support 20 Notes Partial support 20 Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Edge Partial support 79 Notes Partial support 79 Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Full support 45	Opera Partial support 15 Notes Partial support 15 Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Safari Partial support Partial Notes Partial support Partial Notes Notes This feature is supported but not exposed through the 'extensionTypes' object.	Firefox Android Full support 48
`CSSOrigin`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android Full support 53

Legend

Full support: Full support
Partial support: Partial support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`find`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`highlightResults`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`removeHighlighting`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`HistoryItem`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No
`HistoryItem.typedCount`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`TransitionType`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50	Opera Full support Yes	Safari No support No	Firefox Android No support No
`VisitItem`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50	Opera Full support Yes	Safari No support No	Firefox Android No support No
`addUrl`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No
`addUrl.title`	Chrome No support No	Edge No support No	Firefox Full support 49	Opera No support No	Safari No support No	Firefox Android No support No
`addUrl.transition`	Chrome No support No	Edge No support No	Firefox Full support 49	Opera No support No	Safari No support No	Firefox Android No support No
`addUrl.visitTime`	Chrome No support No	Edge No support No	Firefox Full support 49	Opera No support No	Safari No support No	Firefox Android No support No
`deleteAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No
`deleteRange`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No
`deleteUrl`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getVisits`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onTitleChanged`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android No support No
`onVisitRemoved`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onVisited`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 50 Notes Full support 50 Notes Notes Before version 56, the result object's 'title' was always an empty string. From version 56 onwards, it is set to the last known title, if that is available, or an empty string otherwise.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`search`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 49	Opera Full support Yes	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`LanguageCode`	Chrome Full support 47	Edge Full support 14	Firefox Full support 45	Opera Full support 34	Safari No support No	Firefox Android Full support 48
`detectLanguage`	Chrome Full support 47	Edge Full support 79	Firefox Full support 47	Opera Full support 34	Safari No support No	Firefox Android Full support 48
`getAcceptLanguages`	Chrome Full support 47	Edge Full support 14	Firefox Full support 47	Opera Full support 34	Safari Full support 14	Firefox Android Full support 48
`getMessage`	Chrome Full support 17	Edge Full support 14 Notes Full support 14 Notes Notes Throws an exception instead returning an empty string if the message does not exist. Notes Expects substitutions to be strings, while other browsers allow any value which is then converted to a string.	Firefox Full support 45 Notes Full support 45 Notes Notes Firefox 47 and earlier returns "??" instead of "" if the message is not found in _locales, bug 1258199 changed this act to match Chrome, landed on Firefox 48.	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`getUILanguage`	Chrome Full support 35	Edge Full support 14	Firefox Full support 47 Notes Full support 47 Notes Notes Firefox 55 and earlier returns a language tag that's seperated with the underscore character instead of hyphen, see bug 1374552.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`getRedirectURL`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support 60	Safari No support No	Firefox Android No support No
`launchWebAuthFlow`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53 Full support 53 No support 53 — 63 Notes Notes The `redirect_uri` URL parameter is required.	Opera Full support Yes	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`IdleState`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`onStateChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 51	Opera Full support Yes	Safari No support No	Firefox Android Full support 51
`onStateChanged.locked`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`queryState`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 51, Firefox always reports 'active'. After version 51, Firefox reports 'active' or 'idle' as appropriate.	Opera Full support Yes	Safari No support No	Firefox Android Full support 48 Notes Full support 48 Notes Notes Before version 51, Firefox always reports 'active'. After version 51, Firefox reports 'active' or 'idle' as appropriate.
`queryState.locked`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`setDetectionInterval`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 51	Opera Full support Yes	Safari No support No	Firefox Android Full support 51

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ExtensionInfo`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 51	Opera Full support Yes	Safari No support No	Firefox Android Full support 51
`ExtensionInfo.disabledReason`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`ExtensionInfo.offlineEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`ExtensionInfo.type`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55	Opera Full support Yes	Safari No support No	Firefox Android Full support 55
`ExtensionInfo.versionName`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`get`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 56	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`getAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55 Notes Full support 55 Notes Notes Before version 56, only extensions whose 'type' is 'theme' are returned.	Opera Full support Yes	Safari No support No	Firefox Android Full support 55 Notes Full support 55 Notes Notes Before version 56, only extensions whose 'type' is 'theme' are returned.
`getPermissionWarningsById`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getPermissionWarningsByManifest`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getSelf`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 51	Opera No support No	Safari No support No	Firefox Android Full support 51
`install`	Chrome No support No	Edge No support No	Firefox Full support 63 Notes Full support 63 Notes Notes The installable file pointed to by `url` must be a theme, and not a normal browser extension.	Opera No support No	Safari No support No	Firefox Android Full support 63 Notes Full support 63 Notes Notes The installable file pointed to by `url` must be a theme, and not a normal browser extension.
`onDisabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onInstalled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onUninstalled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`setEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55 Notes Full support 55 Notes Notes Only extensions whose 'type' is 'theme' can be enabled and disabled.	Opera Full support Yes	Safari No support No	Firefox Android Full support 55 Notes Full support 55 Notes Notes Only extensions whose 'type' is 'theme' can be enabled and disabled.
`uninstall`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`uninstallSelf`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 51	Opera Full support Yes	Safari No support No	Firefox Android Full support 51
`uninstallSelf.dialogMessage`	Chrome No support No	Edge No support No	Firefox Full support 51	Opera No support No	Safari No support No	Firefox Android Full support 51

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ACTION_MENU_TOP_LEVEL_LIMIT`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ACTION_MENU_TOP_LEVEL_LIMIT`	Firefox Android No support No
`ContextType`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ContextType`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ContextType`	Firefox Full support 55 Notes Full support 55 Notes Notes 'The 'editable' context does not include password fields. Use the 'password' context for this. Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ContextType`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ContextType`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ContextType`	Firefox Android No support No
`ContextType.bookmark`	Chrome No support No Notes No support No Notes Notes See bug 825443	Edge No support No Notes No support No Notes Notes See bug 825443	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`ContextType.browser_action`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 53 Notes Full support 53 Notes Notes 'The 'editable' context does not include password fields. Use the 'password' context for this.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`ContextType.launcher`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 48	Opera Full support Yes	Safari No support No	Firefox Android No support No
`ContextType.page_action`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 53	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`ContextType.password`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android No support No
`ContextType.tab`	Chrome No support No	Edge No support No	Firefox Full support 53	Opera No support No	Safari No support No	Firefox Android No support No
`ContextType.tools_menu`	Chrome No support No	Edge No support No	Firefox Full support 56 Notes Full support 56 Notes Notes Only available at `menus.ContextType`, not at `contextMenus.ContextType`.	Opera No support No	Safari No support No	Firefox Android No support No
`ItemType`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ItemType`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ItemType`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ItemType`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ItemType`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.ItemType`	Firefox Android No support No
`OnClickData`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData`	Firefox Android No support No
`OnClickData.bookmarkId`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`OnClickData.button`	Chrome No support No	Edge No support No	Firefox Full support 64	Opera No support No	Safari No support No	Firefox Android No support No
`OnClickData.frameId`	Chrome Full support 35 Alternate Name Full support 35 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData.frameId`	Edge Full support ≤79 Alternate Name Full support ≤79 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData.frameId`	Firefox Full support 55	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData.frameId`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.OnClickData.frameId`	Firefox Android No support No
`OnClickData.linkText`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`OnClickData.modifiers`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera No support No	Safari No support No	Firefox Android No support No
`OnClickData.targetElementId`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No
`create`	Chrome Full support Yes Notes Alternate Name Full support Yes Notes Alternate Name Notes Items that don't specify 'contexts' do not inherit contexts from their parents. Alternate Name Uses the non-standard name: `contextMenus.create`	Edge Full support 14 Notes Alternate Name Full support 14 Notes Alternate Name Notes Items that don't specify 'contexts' do not inherit contexts from their parents. Alternate Name Uses the non-standard name: `contextMenus.create`	Firefox Full support 55 Full support 55 Full support 48 Notes Alternate Name Notes Before version 53, items that don't specify 'contexts' do not inherit contexts from their parents. Alternate Name Uses the non-standard name: `contextMenus.create`	Opera Full support Yes Notes Alternate Name Full support Yes Notes Alternate Name Notes Items that don't specify 'contexts' do not inherit contexts from their parents. Alternate Name Uses the non-standard name: `contextMenus.create`	Safari Full support 14 Notes Alternate Name Full support 14 Notes Alternate Name Notes Items that don't specify 'contexts' do not inherit contexts from their parents. Alternate Name Uses the non-standard name: `contextMenus.create`	Firefox Android No support No
`create`: `&` in `title` sets access key	Chrome Full support Yes	Edge Full support ≤79	Firefox Full support 63	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes Safari removes `&` from menu items' displayed titles, but does not support invoking menu items via access keys.	Firefox Android No support No
`create.command`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android No support No
`create.icons`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`create.visible`	Chrome Full support 62	Edge Full support 79	Firefox Full support 63	Opera Full support 49	Safari Full support 14	Firefox Android No support No
`getTargetElement`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No
`onClicked`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onClicked`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onClicked`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onClicked`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onClicked`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onClicked`	Firefox Android No support No
`onHidden`	Chrome No support No	Edge No support No	Firefox Full support 60 Full support 60 Full support 60 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onHidden`	Opera No support No	Safari No support No	Firefox Android No support No
`onShown`	Chrome No support No	Edge No support No	Firefox Full support 60 Full support 60 Full support 60 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.onShown`	Opera No support No	Safari No support No	Firefox Android No support No
`refresh`	Chrome No support No	Edge No support No	Firefox Full support 60 Full support 60 Full support 60 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.refresh`	Opera No support No	Safari No support No	Firefox Android No support No
`remove`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.remove`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.remove`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.remove`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.remove`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.remove`	Firefox Android No support No
`removeAll`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.removeAll`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.removeAll`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.removeAll`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.removeAll`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.removeAll`	Firefox Android No support No
`update`	Chrome Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.update`	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.update`	Firefox Full support 55 Full support 55 Full support 48 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.update`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `contextMenus.update`	Safari Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `contextMenus.update`	Firefox Android No support No

Legend

Full support: Full support
Partial support: Partial support
No support: No support
See implementation notes.: See implementation notes.
Uses a non-standard name.: Uses a non-standard name.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`NotificationOptions`	Chrome Full support Yes	Edge Full support 17	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`NotificationOptions.appIconMaskUrl` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.buttons`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera No support No Notes No support No Notes Notes Specifying the 'buttons' option will cause an asynchronous error on Opera.	Safari Full support 14	Firefox Android No support No
`NotificationOptions.contextMessage`	Chrome Full support 31	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored, on Opera 18 and above.	Safari No support No	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.eventTime`	Chrome Full support Yes	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.imageUrl` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Safari Full support 14	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.isClickable`	Chrome Full support 32	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera No support No Notes No support No Notes Notes Setting 'isClickable' to false will cause an asynchronous error on Opera 19 and above. Older Opera versions throw an error synchronously if this options is given.	Safari No support No	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.items`	Chrome Full support Yes Notes Full support Yes Notes Notes On macOS only the first item is shown.	Edge Full support 79 Notes Full support 79 Notes Notes On macOS only the first item is shown.	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Safari Full support 14 Notes Full support 14 Notes Notes On macOS only the first item is shown.	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.priority`	Chrome Full support Yes	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.progress`	Chrome Full support 30	Edge Full support 79	Firefox No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.	Opera No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored, on Opera 17 and above.	Safari No support No	Firefox Android No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored.
`NotificationOptions.requireInteraction`	Chrome Full support 50	Edge Full support 79	Firefox No support No	Opera No support No Notes No support No Notes Notes Specifying this option doesn't throw an error, but its value is ignored, on Opera 37 and above.	Safari No support No	Firefox Android No support No
`TemplateType`	Chrome Full support Yes	Edge Full support 17	Firefox Full support 45 Notes Full support 45 Notes Notes Only the 'basic' type is supported.	Opera Full support Yes Notes Full support Yes Notes Notes Only the 'basic' type is supported.	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes Only the 'basic' type is supported.
`clear`	Chrome Full support 28	Edge Full support 17	Firefox Full support 45	Opera Full support 25	Safari No support No	Firefox Android Full support 48
`create`	Chrome Full support 28	Edge Full support 17	Firefox Full support 45	Opera Full support 25	Safari No support No	Firefox Android Full support 48
`getAll`	Chrome Full support 29	Edge Full support 17	Firefox Full support 45	Opera Full support 25	Safari No support No	Firefox Android Full support 48
`onButtonClicked`	Chrome Full support 28	Edge Full support 17	Firefox No support No	Opera Full support 25	Safari No support No	Firefox Android No support No
`onClicked`	Chrome Full support 28	Edge Full support 17	Firefox Full support 47	Opera Full support 25	Safari No support No	Firefox Android Full support 48
`onClosed`	Chrome Full support 28	Edge Full support 17	Firefox Full support 45	Opera Full support 25	Safari No support No	Firefox Android Full support 48
`onClosed.byUser`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onShown`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android Full support 56
`update`	Chrome Full support 28	Edge Full support 17	Firefox No support No	Opera Full support 25 Notes Full support 25 Notes Notes Not supported on Macs.	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`OnInputEnteredDisposition`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`SuggestResult`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52 Notes Full support 52 Notes Notes 'description' is interpreted as plain text, and XML markup is not recognised.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onInputCancelled`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onInputChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onInputEntered`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`onInputStarted`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`setDefaultSuggestion`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52 Notes Full support 52 Notes Notes 'description' is interpreted as plain text, and XML markup is not recognised.	Opera Full support Yes	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ImageDataType`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`getPopup`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 50 Notes Full support 50 Notes Notes The 'tabId' parameter is ignored: the page action popup is the same for all tabs.
`getTitle`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`hide`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 50 Notes Full support 50 Notes Notes Before version 56, the 'tabId' parameter was ignored, and the page action was hidden for all tabs.
`isShown`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`onClicked`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 50
`onClicked.OnClickData`	Chrome No support No	Edge No support No	Firefox Full support 72	Opera No support No	Safari No support No	Firefox Android No support No
`onClicked.tab`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 50
`openPopup`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`setIcon`	Chrome Full support Yes Notes Full support Yes Notes Notes Before Chrome 23, `path` couldn't specify multiple icon files, but had to be a string specifying a single icon path.	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android No support No
`setIcon.imageData`	Chrome Full support 23	Edge Full support 79	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android No support No
`setIcon`: The `path` and `imageData` properties of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No
`setPopup`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 50 Notes Full support 50 Notes Notes The 'tabId' parameter is ignored, and the popup is set for all tabs.
`setPopup`: The `popup` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No
`setTitle`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`setTitle`: The `title` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari Full support 14	Firefox Android No support No
`show`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 50 Notes Full support 50 Notes Notes Before version 56, the 'tabId' parameter was ignored, and the page action was shown for all tabs.

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`contains`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`getAll`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`onAdded`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 77 Notes Full support 77 Notes Notes There is a polyfill available for earlier versions.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`onRemoved`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 77 Notes Full support 77 Notes Notes There is a polyfill available for earlier versions.	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`Permissions`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 55
`remove`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes Removing `<all_urls>` or `:///*` origins will remove previously granted permission to request specific origin patterns and will stop automatically prompting the user for access to any visited website via the extension's access popover in the toolbar.	Firefox Android Full support 55
`request`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 55 Notes Full support 55 Notes Notes The user will be prompted again for permissions that have been previously granted and then removed. Notes It's not possible to request permissions from a popup or a sidebar document. No support 56 — 61 Notes Notes It's not possible to request permissions from an options page that's embedded in about:addons. To request permissions from an options page, set the `open_in_tab` property in the `options_ui` manifest key, so the options page opens in its own tab.	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes Requesting `<all_urls>` or `:///*` origins will grant permission to request specific origin patterns and automatically prompt the user for access to any visited website via the extension's access popover in the toolbar. Notes The user will be prompted again for permissions that have been previously granted and then removed. Notes Supported permissions will be granted without prompting the user. Only specific origin patterns will prompt the user.	Firefox Android Full support 55 Notes Full support 55 Notes Notes The user will be prompted again for permissions that have been previously granted and then removed. Notes It's not possible to request permissions from a popup or a sidebar document. No support 56 — 61 Notes Notes It's not possible to request permissions from an options page that's embedded in about:addons. To request permissions from an options page, set the `open_in_tab` property in the `options_ui` manifest key, so the options page opens in its own tab.

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`getModuleSlots` Non-standard	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No
`installModule` Non-standard	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No
`isModuleInstalled` Non-standard	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No
`uninstallModule` Non-standard	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`network.networkPredictionEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android Full support 54
`network.peerConnectionEnabled`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android Full support 55
`network.webRTCIPHandlingPolicy`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54 Notes Full support 54 Notes Notes Starting in Firefox 70, a value of `disable_non_proxied_udp` requires a proxy if one is configured, but allows connections to go through if no proxy is set up. Previously, in this mode WebRTC could only be used if a proxy was configured and TURN over TCP was available; this behavior is now exposed as `proxy_only`.	Opera Full support Yes	Safari No support No	Firefox Android Full support 54
`services.autofillAddressEnabled`	Chrome Full support 70	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.autofillCreditCardEnabled`	Chrome Full support 70	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.autofillEnabled` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.alternateErrorPagesEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.passwordSavingEnabled`	Chrome Full support 38	Edge Full support 79	Firefox Full support 56	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`services.safeBrowsingEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.safeBrowsingExtendedReportingEnabled`	Chrome Full support 42	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.searchSuggestEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.spellingServiceEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`services.translationServiceEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`websites.cookieConfig`	Chrome No support No	Edge No support No	Firefox Full support 59 Notes Full support 59 Notes Notes The `behavior` property value "reject_trackers_and_partition_foreign" was introduced in version 78. Notes The `behavior` property value "reject_trackers" was introduced in version 64.	Opera No support No	Safari No support No	Firefox Android Full support 59 Notes Full support 59 Notes Notes The `behavior` property value "reject_trackers" was introduced in version 64.
`websites.firstPartyIsolate`	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android Full support 58
`websites.hyperlinkAuditingEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 54	Opera Full support Yes	Safari No support No	Firefox Android Full support 54
`websites.protectedContentEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`websites.referrersEnabled`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 56	Opera Full support Yes	Safari No support No	Firefox Android Full support 56
`websites.resistFingerprinting`	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android Full support 58
`websites.thirdPartyCookiesAllowed`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`websites.trackingProtectionMode`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android Full support 57

Legend

Full support: Full support
No support: No support
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`onError`	Chrome No support No	Edge No support No	Firefox Full support 60 Full support 60 No support 55 — 71 Alternate Name Alternate Name Uses the non-standard name: `onProxyError`	Opera No support No	Safari No support No	Firefox Android Full support 60 Full support 60 Full support 55 Alternate Name Alternate Name Uses the non-standard name: `onProxyError`
`onRequest`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`ProxyInfo`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.cookieStoreId`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.documentUrl`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.frameId`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.fromCache`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.incognito`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.method`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.originUrl`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.parentFrameId`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.requestHeaders`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.requestId`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.tabId`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.thirdParty`	Chrome No support No	Edge No support No	Firefox Full support 72	Opera No support No	Safari No support No	Firefox Android No support No
`RequestDetails.timeStamp`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.type`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`RequestDetails.url`	Chrome No support No	Edge No support No	Firefox Full support 60	Opera No support No	Safari No support No	Firefox Android Full support 60
`register` Deprecated	Chrome No support No	Edge No support No	Firefox No support 56 — 71 No support 56 — 71 Full support 55 Alternate Name Alternate Name Uses the non-standard name: `registerProxyScript`	Opera No support No	Safari No support No	Firefox Android Full support 56 Full support 56 Full support 55 Alternate Name Alternate Name Uses the non-standard name: `registerProxyScript`
`settings`	Chrome No support No	Edge No support No	Firefox Full support 60 Notes Full support 60 Notes Notes In version 59, this property was listed as `proxyConfig` in the `browserSettings` namespace, but it had a bug that made it mostly unusable.	Opera No support No	Safari No support No	Firefox Android No support No
`unregister` Deprecated	Chrome No support No	Edge No support No	Firefox No support 56 — 71	Opera No support No	Safari No support No	Firefox Android Full support 56

Legend

Full support: Full support
No support: No support
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.
See implementation notes.: See implementation notes.
Uses a non-standard name.: Uses a non-standard name.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`MessageSender`	Chrome Full support 26	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes Before version 54, 'id' was the add-on's internal UUID, not the add-on ID.	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes Before version 54, 'id' was the add-on's internal UUID, not the add-on ID.
`MessageSender.frameId`	Chrome Full support 41	Edge Full support 14	Firefox Full support 45	Opera Full support 28	Safari No support No	Firefox Android Full support 48
`MessageSender.tlsChannelId`	Chrome Full support 32	Edge Full support 79	Firefox Full support 45	Opera Full support 19	Safari No support No	Firefox Android Full support 48
`MessageSender.url`	Chrome Full support 28	Edge Full support 14 Notes Full support 14 Notes Notes The `url` is missing when the message was sent by an extension view.	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`OnInstalledReason`	Chrome Full support Yes Notes Full support Yes Notes Notes Uses 'chrome_update' instead of 'browser_update'.	Edge Full support 14 Notes Full support 14 Notes Notes Only supports 'install' and 'update'.	Firefox Full support 45	Opera Full support Yes Notes Full support Yes Notes Notes Uses 'chrome_update' instead of 'browser_update'.	Safari Full support 14 Notes Full support 14 Notes Notes Only supports 'install' and 'update'.	Firefox Android Full support 48
`OnRestartRequiredReason`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`PlatformArch`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`PlatformInfo`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`PlatformInfo.nacl_arch`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`PlatformNaclArch`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android Full support 48
`PlatformOs`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`Port`	Chrome Full support 26	Edge Full support 15	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`Port.error`	Chrome No support No	Edge No support No	Firefox Full support 52	Opera No support No	Safari No support No	Firefox Android Full support 52
`RequestUpdateCheckStatus`	Chrome Full support Yes	Edge Full support 79	Firefox No support No	Opera Full support Yes	Safari No support No	Firefox Android No support No
`connect`	Chrome Full support 26	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`connectNative`	Chrome Full support 29	Edge Full support 15	Firefox Full support 50	Opera Full support 16	Safari Full support 14 Notes Full support 14 Notes Notes See the documentation on developer.apple.com about native messaging in Safari.	Firefox Android No support No
`getBackgroundPage`	Chrome Full support 22	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes If this is called from a page that is part of a private browsing window, such as a sidebar in a private window or a popup opened from a private window, then it will always return `null`.	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48 Notes Full support 48 Notes Notes If this is called from a page that is part of a private browsing window, such as a sidebar in a private window or a popup opened from a private window, then it will always return `null`.
`getBrowserInfo`	Chrome No support No	Edge No support No	Firefox Full support 51	Opera No support No	Safari No support No	Firefox Android Full support 51
`getManifest`	Chrome Full support 22	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`getPackageDirectoryEntry`	Chrome Full support 29	Edge Full support 79	Firefox No support No	Opera Full support 16	Safari No support No	Firefox Android No support No
`getPlatformInfo`	Chrome Full support 29	Edge Full support 79	Firefox Full support 45	Opera Full support 16	Safari Full support 14	Firefox Android Full support 48
`getURL`	Chrome Full support 22	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`id`	Chrome Full support 22	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`lastError`	Chrome Full support Yes Notes Full support Yes Notes Notes lastError is not an Error object. Instead, it is a plain Object with the error text as the string value of the 'message' property.	Edge Full support 14	Firefox Full support 47	Opera Full support Yes Notes Full support Yes Notes Notes lastError is not an Error object. Instead, it is a plain Object with the error text as the string value of the 'message' property.	Safari Full support 14 Notes Full support 14 Notes Notes `lastError` is only set if a callback is used. `Promise` results that fail will be rejected with an `Error` object.	Firefox Android Full support 48
`onBrowserUpdateAvailable` DeprecatedNon-standard	Chrome Full support 27	Edge Full support 79	Firefox No support No	Opera Full support 15	Safari No support No	Firefox Android No support No
`onConnect`	Chrome Full support 26	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`onConnectExternal`	Chrome Full support 26	Edge Full support 79	Firefox Full support 54	Opera Full support 15	Safari No support No	Firefox Android Full support 54
`onInstalled`	Chrome Full support 22	Edge Full support 14	Firefox Full support 52 Notes Full support 52 Notes Notes Before version 55, this event is not triggered for temporarily installed add-ons.	Opera Full support 15	Safari Full support 14	Firefox Android Full support 52 Notes Full support 52 Notes Notes Before version 55, this event is not triggered for temporarily installed add-ons.
`onMessage`	Chrome Full support 26	Edge Full support 14	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`onMessage`: Respond with `Promise`	Chrome No support No	Edge No support No	Firefox Full support Yes	Opera No support No	Safari No support No	Firefox Android Full support Yes
`onMessageExternal`	Chrome Full support 26	Edge Full support 79	Firefox Full support 54	Opera Full support 15	Safari Full support 14	Firefox Android Full support 54
`onMessageExternal`: Respond with `Promise`	Chrome No support No	Edge No support No	Firefox Full support Yes	Opera No support No	Safari No support No	Firefox Android Full support Yes
`onRestartRequired`	Chrome Full support 29	Edge Full support 79	Firefox No support No	Opera Full support 16	Safari No support No	Firefox Android No support No
`onStartup`	Chrome Full support 23	Edge Full support 79	Firefox Full support 52	Opera Full support 15	Safari Full support 14	Firefox Android Full support 52
`onSuspend`	Chrome Full support 22	Edge Full support 79	Firefox No support No	Opera Full support 15	Safari No support No	Firefox Android No support No
`onSuspendCanceled`	Chrome Full support 22	Edge Full support 79	Firefox No support No	Opera Full support 15	Safari No support No	Firefox Android No support No
`onUpdateAvailable`	Chrome Full support 25	Edge Full support 79	Firefox Full support 51	Opera Full support 15	Safari No support No	Firefox Android Full support 51
`openOptionsPage`	Chrome Full support 42	Edge Full support 79	Firefox Full support 48	Opera Full support 29	Safari Full support 14	Firefox Android Full support 57
`reload`	Chrome Full support 25	Edge Full support 15	Firefox Full support 51	Opera Full support 15	Safari Full support 14	Firefox Android Full support 51
`requestUpdateCheck`	Chrome Full support 25	Edge Full support 79	Firefox No support No	Opera Full support 15	Safari No support No	Firefox Android No support No
`sendMessage`	Chrome Full support 26	Edge Full support 14 Notes Full support 14 Notes Notes `runtime.onMessage` listeners in extension views receive the messages they sent.	Firefox Full support 45	Opera Full support 15	Safari Full support 14	Firefox Android Full support 48
`sendNativeMessage`	Chrome Full support 29	Edge Full support 15	Firefox Full support 50	Opera Full support 16	Safari Full support 14 Notes Full support 14 Notes Notes See the documentation on developer.apple.com about native messaging in Safari.	Firefox Android No support No
`setUninstallURL`	Chrome Full support 41	Edge Full support 15	Firefox Full support 47	Opera Full support 28	Safari Partial support 14 Notes Partial support 14 Notes Notes API exists, but has no effect.	Firefox Android Full support 48

Legend

Full support: Full support
Partial support: Partial support
No support: No support
Non-standard. Expect poor cross-browser support.: Non-standard. Expect poor cross-browser support.
Deprecated. Not for use in new websites.: Deprecated. Not for use in new websites.
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`get`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No
`search`	Chrome No support No	Edge No support No	Firefox Full support 63	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`Filter`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`MAX_SESSION_RESULTS`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Session`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52 Notes Full support 52 Notes Notes 'Tab' objects in Sessions don't contain the 'url', 'title', or 'favIconUrl' properties.	Opera Full support Yes	Safari No support No	Firefox Android No support No
`forgetClosedTab`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android No support No
`forgetClosedWindow`	Chrome No support No	Edge No support No	Firefox Full support 55	Opera No support No	Safari No support No	Firefox Android No support No
`getRecentlyClosed`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`getTabValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`getWindowValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`onChanged`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 53	Opera Full support Yes	Safari No support No	Firefox Android No support No
`removeTabValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`removeWindowValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`restore`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 52	Opera Full support Yes	Safari No support No	Firefox Android No support No
`setTabValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`setWindowValue`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`ImageDataType`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`close`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`getBadgeBackgroundColor`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`getBadgeText`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`getPanel`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`getTitle`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`isOpen`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`onBlur`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`onFocus`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`open`	Chrome No support No	Edge No support No	Firefox Full support 57	Opera No support No	Safari No support No	Firefox Android No support No
`setBadgeBackgroundColor`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`setBadgeText`	Chrome No support No	Edge No support No	Firefox No support No	Opera Full support 30	Safari No support No	Firefox Android No support No
`setIcon`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`setIcon`: The `path` and `imageData` properties of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`setPanel`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`setPanel`: The `panel` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`setTitle`	Chrome No support No	Edge No support No	Firefox Full support 54	Opera Full support 30	Safari No support No	Firefox Android No support No
`setTitle`: The `title` property of the `details` parameter can be set to `null`.	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`toggle`	Chrome No support No	Edge No support No	Firefox Full support 73	Opera No support No	Safari No support No	Firefox Android No support No

Legend

Full support: Full support
No support: No support

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`StorageArea`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`StorageArea.clear`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support 33	Safari Full support 14	Firefox Android Full support 48
`StorageArea.get`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support 33	Safari Full support 14	Firefox Android Full support 48
`StorageArea.getBytesInUse`	Chrome Full support Yes	Edge Full support 14	Firefox No support No	Opera Full support 33	Safari Full support 14	Firefox Android No support No
`StorageArea.remove`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support 33	Safari Full support 14	Firefox Android Full support 48
`StorageArea.set`	Chrome Full support Yes	Edge Full support 14 Notes Full support 14 Notes Notes storage is limited to 1MB per value.	Firefox Full support 45	Opera Full support 33	Safari Full support 14	Firefox Android Full support 48
`StorageChange`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`local`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45 Notes Full support 45 Notes Notes The storage API is supported in content scripts from version 48.	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`managed`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 57 Notes Full support 57 Notes Notes Platform-specific storage backends, such as Windows registry keys, are not supported. Notes Enforcement of extension-provided storage schemas is not supported. Notes The `onChanged` event is not supported.	Opera No support No	Safari No support No	Firefox Android No support No
`onChanged`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 48
`sync`	Chrome Full support Yes	Edge Full support 15	Firefox Full support 53	Opera No support No	Safari Partial support 14 Notes Partial support 14 Notes Notes Safari does not sync items saved in the `sync` storage area, i.e. it behaves the same as the `local` storage area.	Firefox Android No support No

Legend

Full support: Full support
Partial support: Partial support
No support: No support
See implementation notes.: See implementation notes.

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Firefox for Android
`MutedInfo`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari Partial support 14 Notes Partial support 14 Notes Notes `reason` and `extensionId` will not be populated.	Firefox Android No support No
`MutedInfoReason`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari No support No	Firefox Android No support No
`PageSettings`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.edgeBottom`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.edgeLeft`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.edgeRight`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.edgeTop`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.fileName`	Chrome No support No	Edge No support No	Firefox Full support 75	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.footerCenter`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.footerLeft`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.footerRight`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.headerCenter`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.headerLeft`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.headerRight`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.marginBottom`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.marginLeft`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.marginRight`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.marginTop`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.orientation`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.paperHeight`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.paperSizeUnit`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.paperWidth`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.scaling`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.showBackgroundColors`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.showBackgroundImages`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`PageSettings.shrinkToFit`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android No support No
`TAB_ID_NONE`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.active`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.audible`	Chrome Full support 45	Edge Full support 79	Firefox Full support 45	Opera Full support 32	Safari Full support 14	Firefox Android Full support 54
`Tab.autoDiscardable`	Chrome Full support 54	Edge Full support 79	Firefox No support No	Opera Full support 41	Safari No support No	Firefox Android No support No
`Tab.cookieStoreId`	Chrome No support No	Edge No support No	Firefox Full support 52	Opera No support No	Safari No support No	Firefox Android No support No
`Tab.discarded`	Chrome Full support 54	Edge Full support 79	Firefox Full support 57	Opera Full support 41	Safari No support No	Firefox Android Full support 57
`Tab.favIconUrl`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`Tab.height`	Chrome Full support 31	Edge Full support 79	Firefox Full support 45	Opera Full support 18	Safari Full support 14	Firefox Android Full support 54
`Tab.highlighted`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.id`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.incognito`	Chrome Full support Yes	Edge Full support 14 Alternate Name Full support 14 Alternate Name Alternate Name Uses the non-standard name: `inPrivate`	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.index`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.isArticle`	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No
`Tab.isInReaderMode`	Chrome No support No	Edge No support No	Firefox Full support 58	Opera No support No	Safari No support No	Firefox Android No support No
`Tab.lastAccessed`	Chrome No support No	Edge No support No	Firefox Full support 56	Opera No support No	Safari No support No	Firefox Android Full support 56
`Tab.mutedInfo`	Chrome Full support 46	Edge Full support 79	Firefox Full support 45	Opera Full support 33	Safari Partial support 14 Notes Partial support 14 Notes Notes `reason` and `extensionId` will not be populated.	Firefox Android Full support 54
`Tab.openerTabId`	Chrome Full support 18	Edge Full support 79	Firefox Full support 57	Opera Full support 15	Safari Full support 14	Firefox Android No support No
`Tab.pinned`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.selected` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.sessionId`	Chrome Full support 31	Edge Full support 79	Firefox Full support Yes	Opera Full support 18	Safari No support No	Firefox Android No support No
`Tab.status`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.successorTabId`	Chrome No support No	Edge No support No	Firefox Full support 65	Opera No support No	Safari No support No	Firefox Android No support No
`Tab.title`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.url`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`Tab.width`	Chrome Full support 31	Edge Full support 79	Firefox Full support 45	Opera Full support 18	Safari Full support 14	Firefox Android Full support 54
`Tab.windowId`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`TabStatus`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`WindowType`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`ZoomSettings`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`ZoomSettingsMode`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`ZoomSettingsScope`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari No support No	Firefox Android No support No
`captureTab`	Chrome No support No	Edge No support No	Firefox Full support 59	Opera No support No	Safari No support No	Firefox Android No support No
`captureVisibleTab`	Chrome Full support Yes Notes Full support Yes Notes Notes The default file format is 'jpeg'.	Edge Full support 15	Firefox Full support 47	Opera Full support Yes Notes Full support Yes Notes Notes The default file format is 'jpeg'.	Safari Full support 14 Notes Full support 14 Notes Notes The default file format is 'jpeg'. Notes `<all_urls>` permission not required to call this.	Firefox Android Full support 54
`connect`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`create`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`detectLanguage`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14 Notes Full support 14 Notes Notes Will return `und` (undefined language) for OS lower than 10.16. Notes Locale identifier will include the country code more often.	Firefox Android No support No
`discard`	Chrome Full support 54 Notes Full support 54 Notes Notes Only accepts a single tab ID as a parameter, not an array. Notes The tab ID argument is optional: if it is omitted, the browser discards the least important tab. Notes The callback is passed a `Tab` object representing the tab that was discarded. Notes Tabs whose document contains a `beforeunload` listener that displays a prompt will be discarded.	Edge Full support 14	Firefox Full support 58	Opera Full support Yes Notes Full support Yes Notes Notes Only accepts a single tab ID as a parameter, not an array. Notes The tab ID argument is optional: if it is omitted, the browser discards the least important tab. Notes The callback is passed a `Tab` object representing the tab that was discarded. Notes Tabs whose document contains a `beforeunload` listener that displays a prompt will be discarded.	Safari No support No	Firefox Android No support No
`duplicate`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari Full support 14	Firefox Android No support No
`duplicate.duplicateProperties`	Chrome No support No	Edge No support No	Firefox Full support 77	Opera No support No	Safari No support No	Firefox Android No support No
`duplicate.tabId`	Chrome Full support Yes	Edge Full support 79	Firefox Full support 47	Opera Full support Yes	Safari Full support Yes	Firefox Android No support No
`executeScript`	Chrome Full support Yes Notes Full support Yes Notes Notes Extensions can't inject scripts into their own pages using this API.	Edge Full support 14	Firefox Full support 43 Notes Full support 43 Notes Notes Before version 50, Firefox would pass a single result value into its callback rather than an array, unless 'allFrames' had been set.	Opera Full support Yes Notes Full support Yes Notes Notes Extensions can't inject scripts into their own pages using this API.	Safari Full support 14	Firefox Android Full support 54
`executeScript.frameId`	Chrome Full support 39	Edge Full support 79	Firefox Full support 43 Notes Full support 43 Notes Notes 'allFrames' and 'frameId' can't both be set at the same time.	Opera Full support 26	Safari Full support 14	Firefox Android Full support 54 Notes Full support 54 Notes Notes 'allFrames' and 'frameId' can't both be set at the same time.
`executeScript.matchAboutBlank`	Chrome Full support 39	Edge Full support 14	Firefox Full support 53	Opera Full support 26	Safari No support No	Firefox Android Full support 54
`executeScript.runAt`	Chrome Full support 20	Edge Full support 79	Firefox Full support 43	Opera Full support 15	Safari No support No	Firefox Android Full support 54
`get`	Chrome Full support Yes	Edge Full support 14	Firefox Full support 45	Opera Full support Yes	Safari Full support 14	Firefox Android Full support 54
`getAllInWindow` DeprecatedNon-standard	Chrome Full support Yes	Edge Full support 79

alarms

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bookmarks

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browserAction

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browserSettings

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browsingData

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captivePortal

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clipboard

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commands

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contentScripts

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contextualIdentities

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cookies

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devtools

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dns

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downloads

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events

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extension

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extensionTypes

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find

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history

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i18n

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identity

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idle

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management

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menus

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notifications

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omnibox

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pageAction

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permissions

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pkcs11

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privacy

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proxy

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runtime

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search

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sessions

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sidebarAction

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storage

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tabs