Google webmaster tool is basically used for doing the analysis of a website. Its main function are:
1. It gives the result of top search queries i.e. it helps to know what keywords and phrases are being searched in the serach engines to determine your website easily.
2. It also assist to present the crawl errors of a website that has been encountered by the Google Bot. By presenting the errors one can easily rectify it without any hassle.
3. It displays how much links are linking to the website so that it can be analyzed how much backlinks are being made for your website.
4. Sitemaps is one of the best feature of a website which helps to navigate it easily.
Google webmaster tools through your see all report website.