Sets zoom settings for the specified tab. These settings are reset to the default settings upon navigating the tab.

This is an asynchronous function that returns a Promise.


let settingZoomSettings = browser.tabs.setZoomSettings(
  tabId,           // optional integer
  zoomSettings     // ZoomSettings


tabId Optional

integer. The ID of the tab to change the zoom settings for. Defaults to the active tab of the current window.


tabs.ZoomSettings. Defines how zoom changes are handled and at what scope.

Return value

A Promise that will be fulfilled with no arguments after the zoom settings have been changed. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.getZoom


Disable zooming for the current tab:

function onSet() {
  console.log(`Set zoom factor`);

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

let setting = browser.tabs.setZoomSettings({ mode: "disabled" });
setting.then(onSet, onError);

Browser compatibility

BCD tables only load in the browser

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