Google determines the value of the websites by using a tool called pagerank checker. The tool was invented by Larry Page and the name was given to the tool. This tool works by analyzing the links on Google toolbar. With the help of this Page Rank checker, you can check the Page Rank of the web pages. This unique tool used by the Google collects the data available at the Google centers. The process of ranking of the factor is called as the Google Toolbar Page Rank. The title “Page Rank” works like a trademark for the Google search engine and the process of the Page Rank was patented after assigning to Stanford University.