Zoom on Standard Web Pages
Supported In:
Allows you to control zoom on a webpage using the built-in iOS/iPadOS pinch and double tap gestures.
Default Value:
- Allow Viewport to Control Zoom through User-Scalable Property
Other Possible Values:
- Disable Zoom
- Always Allow Zoom (WKWebView only)
Zoom in or out occurs when a visitor uses two fingers and drags them away from or toward each other or if a visitor double taps on the screen.
By default, Kiosk Pro will rely on the "user-scalable" attribute set in the page's viewport. You also have the option to disable zooming entirely, or to override the viewport in order to allow zooming regardless.
WKWebView
The default WKWebView browser engine does not include a method for disabling zoom. When using "Disable Zoom", Kiosk Pro injects a script into each page:
var meta = document.createElement('meta');meta.setAttribute('name', 'viewport');meta.setAttribute('content', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no');document.getElementsByTagName('head')[0].appendChild(meta);
UIWebView
The UIWebView browser includes a property called 'scalesPageToFit' which is disabled when using "Disable Zoom". Apple's documentation defines 'scalesPageToFit' as "a boolean value determining whether the webpage scales to fit the view and the user can change the scale."
Alternative to Disable Zoom
If you experience an issue with your page scale when using 'Disable Zoom' and are able to control the page code, you can instead set a viewport meta property in the <head> of your page to prevent zoom when used with the default 'Allow Viewport to Control Zoom through User-Scalable Property':
<meta name="viewport" content="user-scalable=no"/>
Values for Remote Settings Control & Managed App Configuration
| Key | kp_zoomWithStandardBrowserBehavior |
|---|---|
| Key Type | integer |
| Default Value | 1 |
| Possible Values |
|
Change Log
- Included as an on/off toggle in version 1.0.
- Restructured in version 9.4.8 to add the ability to allow zoom even when the webpage disables it through a viewport setting.
- The previous Zoom menu under Interactions was renamed "Pinch-to-Zoom Gestures" to differentiate it from the Page Auto Zoom feature introduced in version 11.2. This menu still controls zoom gesture behaviors.