Gets the current zoom factor for the specified tab.
Syntax
chrome.tabs.getZoom(
tabId, // optional integer
function(zoomFactor) {...} // function
)
This API is also available as browser.tabs.getZoom() in a version that returns a promise.
Parameters
tabIdOptionalinteger. The ID of the tab to get the current zoom factor from. Defaults to the active tab of the current window.callbackfunction. Called with the tab's current zoom factor. The function is passed the following arguments:zoomFactornumber. The tab's current zoom factor, as a number between 0.3 and 3.
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Chrome | Edge | Firefox | Firefox for Android | Opera | |
|---|---|---|---|---|---|
| Basic support | Yes | No | 45.0 | No | 33 |
Examples
Get the zoom factor for the current tab:
function onGot(zoom) {
console.log(zoom);
}
chrome.tabs.getZoom(onGot);
Get the zoom factor for the tab whose ID is 2:
function onGot(zoom) {
console.log(zoom);
}
chrome.tabs.getZoom(2, onGot);
Acknowledgements
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.
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