Getting started with the Page Inspector is pretty simple. Because it ships with VS, it’s ready for use. However, it has a few prerequisites. First of all, you need to have Internet Explorer 9 or later installed on your machine. Secondly, your site needs to run against .NET 4 or later. Because the Planet Wrox sample site runs against .NET 4.5, this is not a problem. Thirdly, the Page Inspector needs to be installed and registered correctly on your machine.