This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The scale read-only property of the VisualViewport interface returns the pinch-zoom scaling factor applied to the visual viewport.


var scale = VisualViewport.scale


A double.


Specification Status Comment
Visual Viewport API
The definition of 'scale' in that specification.
Draft Initial definition.

Browser Compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 60 ? ? 47 ?
Feature Android Webview Chrome for Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile
Basic support 60 60 ? ? ? 47 ?

Document Tags and Contributors

Contributors to this page: jpmedley
Last updated by: jpmedley,