# # Auto Zoom when typewriting on iPhone

## # The page will automatically zoom in when typewriting on iPhone

This is a feature for iPhones, if you want to prevent page from Auto Zoom when typewriting, you can add the following code:

    //*.html
    <meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no">

    //*.js
    // Prevent page from Auto Zoom in Input text fields on iPhone.
     window.onload = function () {
                if(UIExtension.PDFViewCtrl.DeviceInfo.isIPHONE)return
                var lastTouchEnd = 0;
                document.addEventListener('touchend', function (event) {
                var now = (new Date()).getTime();
                if (now - lastTouchEnd <= 300) {
                    event.preventDefault();
                }
                lastTouchEnd = now;
                }, false);
      };