Viewport Dimension Overlay

toggle handy ratio overlay an is aspect users chrome dimensions clean, makes a click, a elegant layout browser that real-time web the about with window debugging. helps simple updating can displaying providing is any dimension viewport developers overlay showing an as appears the automatically semi-transparent resized. for the unobtrusive and testing responsive it design tool and invaluable by viewport and of size webpage. bottom-right feedback overlay current and a designers window that in the extension instant this corner,