Gets the current zoom settings for a specified tab.

This is an asynchronous function that returns a Promise.


var gettingZoomSettings = browser.tabs.getZoomSettings(
  tabId                       // optional integer


integer. The ID of the tab to get the current zoom settings from. Defaults to the active tab of the current window.

Return value

A Promise that will be fulfilled with a tabs.ZoomSettings object representing the tab's current zoom settings. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.

Browser compatibility

ChromeEdgeFirefoxFirefox for AndroidOpera
Basic support Yes No45 No Yes


Get the zoom settings for the current tab:

function onGot(settings) {

function onError(error) {
  console.log(`Error: ${error}`);

var gettingZoomSettings = browser.tabs.getZoomSettings();
gettingZoomSettings.then(onGot, onError);


This API is based on Chromium's chrome.tabs API. This documentation is derived from tabs.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.

Document Tags and Contributors

Contributors to this page: wbamberg, Makyen
Last updated by: wbamberg,