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.


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);

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxOperaSafariFirefox for Android
getZoomSettingsChrome Full support YesEdge Full support 79Firefox Full support 45Opera Full support YesSafari No support NoFirefox Android No support No


Full support  
Full support
No support  
No support

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.