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ページアクション は、ブラウザーのアドレスバーの中のクリックできるアイコンです。

You can listen for clicks on the icon, or specify a popup that will open when the icon is clicked.

If you specify a popup, you can define its contents and behavior using HTML, CSS, and JavaScript, just like a normal web page. JavaScript running in the popup gets access to all the same WebExtension APIs as your background scripts.

You can define most of a page action's properties declaratively using the page_action key in your manifest.json, but can also redefine them programmatically using this API.

Page actions are for actions that are only relevant to particular pages. If your icon should always be available, use a browser action instead.

Pixel data for an image.


Shows the page action for a given tab.
Hides the page action for a given tab.
Sets the page action's title. This is displayed in a tooltip over the page action.
Gets the page action's title.
Sets the page action's icon.
Sets the URL for the page action's popup.
Gets the URL for the page action's popup.
Opens the page action's popup.


Fired when a page action icon is clicked. This event will not fire if the page action has a popup.


ChromeEdgeFirefoxFirefox for AndroidOpera
ImageDataType 有り 無し45 無し 有り
getPopup 有り 有り4550 * 有り
getTitle 有り 有り45 無し 有り
hide 有り 有り4550 * 有り
isShown 無し 無し59 無し 無し
onClicked 有り 有り4550 有り
openPopup 無し 無し57 無し 無し
setIcon 有り * 有り45 無し15
setPopup 有り 有り4550 * 有り
setTitle 有り 有り45 無し 有り
show 有り 有り4550 * 有り

Example extensions


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

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


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