A Google Index Checker is a tool that allows you to check if a specific webpage or website is indexed by Google. Being indexed by Google means that the webpage or website is included in Google's database of webpages and is therefore able to appear in search results. Checking the index status of a webpage or website can be important for website owners and SEO professionals as it can help to identify any issues that may be preventing the webpage or website from being properly indexed, and therefore, from appearing in search results. By identifying these issues, website owners and SEO professionals can take steps to resolve them, which can help to improve the visibility and ranking of the webpage or website in search results.