Want to be able to track your Google PageRank on all the links on your Web site? Download and install PR Overlay for a new look at all those links. What is PageRank? PageRank aka PR is one of the methods Google uses to determine the relevance or importance of a Web page. PageRank is a vote, by all the other Web pages on the Internet, about how important a Web page is. A link to a Web page counts as a vote of support. If there are no incoming links to a Web page then there is no support.