Gets the HTML document set as the popup for this browser action.

Note: This API is available in Manifest V3 or higher.

This is an asynchronous function that returns a Promise.


let gettingPopup = browser.action.getPopup(
  details               // object



An object with the following properties:

tabId Optional

integer. The tab whose popup to get.

windowId Optional

integer. The windows whose popup to get.

  • If windowId and tabId are both supplied, the function fails.
  • If windowId and tabId are both omitted, the global popup is returned.

Return value

A Promise that will be fulfilled with a string containing the URL for the popup's document. This will be a fully qualified URL, such as moz-extension://d1d8a2eb-fe60-f646-af30-a866c5b39942/popups/popup2.html.


Get the popup's URL:

function gotPopup(popupURL) {

let gettingPopup = browser.action.getPopup({});

Browser compatibility

BCD tables only load in the browser

Note: This API is based on Chromium's chrome.action API. This documentation is derived from browser_action.json in the Chromium code.