Microsoft Visio 2013 Viewer allows anyone to view Visio drawings inside their Microsoft Internet Explorer Web browser. Visio users can freely distribute Visio drawings. You can view files with a .vsdx, .vsdm, .vsd, .vdx, .vdw, .vstx, .vstm, .vst, or .vtx extensions. You can see properties on any shape by opening the Properties dialog box and then selecting a shape. Some rendering and display settings are available in the Display tab of the Properties dialog box. Additionally, you can set drawing-layer visibility and colors in the Layers tab, and comment visibility and colors in the Comments tab.