The Viewport Resizer is a bookmarklet added to your web browser that lets users adjust the viewing options to account for different browsers and different digital The plugin is compatible for Opera 9, Firefox 3. Unlike other similar extensions, this one sets the size of the entire window, not Wrapping the HTML. Prepending the Plugin. Looping the Array and ViewPort widths. Animated Entrance. Reset.Here we define some variables for background color, font color and an array for the viewport widths. var resizer is our first variable, which as you can see we create an HTML structure The resize event fires when a viewport is resized. But which viewport?Default browser on Nokia Lumia 830, Windows 10 Mobile.