Botão da Barra de Ferramentas

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Normalmente referido como uma ação do navegador, esta opção da interface do utilizador é um botão adicionado à barra de ferramentas do navegador. Os utilizadores clicam no botão para interagir com a sua extensão.

The toolbar button (browser action) is very like the address bar button (page action). For the differences, and guidance on when to use what, see Page actions and browser actions.

Especificar a ação do navegador

Define as propriedades da ação do navegador utilizando a chave browser_action em manifest.json:

"browser_action": {
  "default_icon": {
    "19": "button/geo-19.png",
    "38": "button/geo-38.png"
  "default_title": "Whereami?"

The only mandatory key is default_icon.

There are two ways to specify a browser action: with or without a popup. If you don't specify a popup, when the user clicks the button an event is dispatched to the extension, which the extension listens for using browserAction.onClicked:


If you specify a popup, the click event is not dispatched: instead, the popup is shown when the user clicks the button. The user is able to interact with the popup and it closes automatically when the user clicks outside it. See the Popup article for more details on creating and managing popups.

Note that your extension can have only one browser action.

You can change any of the browser action properties programmatically using the browserAction API.


For details on how to create icons to use with your browser action, see Iconography in the Photon Design System documentation.


The webextensions-examples repository on GitHub contains two examples of extensions that implement browser actions:

  • bookmark-it uses a browser action without a popup.
  • beastify uses a browser action with a popup.