Google's business involves keeping track of people as they browse the web. This is easy for Google if you use their browser (Chrome), their internet service (Fiber), or any of their sites (GMail, etc.). It is more difficult when you are on sites that do not belong to Google. However, Google provides very useful tools to web site creators that, when used by them, allow Google to get information about your browsing and actions on non-Google sites. Information about your visits is sent to Google when those sites use these tools. This extension shows you which sites provide that information to Google and which do not. It will also show you what percentage of the pages you visit send this information to Google.