sevencreations Google Webmaster Tools is a free service that helps you evaluate and maintain your website's performance in search results. GWT makes it possible to submit new pages and posts for Google to crawl and remove content you don't want search engine users to discover. It helps you deliver and evaluate content that offers users a more visual experience. It allows you to discover and eliminate malware or spam problems that may not be easily found through other means.
To know more click on mentioned hyperlink - https://search.google.com/search-console/about