tabs.getZoom()

Gets the current zoom factor for the specified tab.

This is an asynchronous function that returns a Promise.

Syntax

js

let gettingZoom = browser.tabs.getZoom(
  tabId                     // optional integer
)

Parameters

tabId Optional

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

Return value

A Promise that will be fulfilled with the tab's current zoom factor, as a number between 0.3 and 5. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.

Examples

Get the zoom factor for the current tab:

js

function onGot(zoom) {
  console.log(zoom);
}

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

let gettingZoom = browser.tabs.getZoom();
gettingZoom.then(onGot, onError);

Get the zoom factor for the tab whose ID is 2:

js

function onGot(zoom) {
  console.log(zoom);
}

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

let gettingZoom = browser.tabs.getZoom(2);
gettingZoom.then(onGot, onError);

Example extensions

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.