Google Search Console (previously Google Webmaster Tools) is a no-charge web service by Google for webmasters. It allows webmasters to check indexing status and optimize visibility of their websites. As of May 20, 2015, Google rebranded Google Webmaster Tools as Google Search Console.

Webmaster tool is very helpful in the SEO process. The first process in SEO is webmaster registration and website submission. After that, you have to prove the authorship of your website by doing the verification process. After verification, you can see all the website related data in the dashboard. You can not start SEO without webmaster tool, it will help you a lot.

Google webmaster tool is used to monitor and notice the website crawl errors, indexing pages, malware detected etc.. of a website.