Search engine optimization SEO – Improve your site’s visibility in Google Search

https://www.google.com/webmasters/tools/docs/en/about.html

Webmaster Tools helps you see how your site is performing in our search results, troubleshoot potential problems, and build Google-friendly sites. Webmaster Tools is for anybody with a website – bloggers, online stores big and small, government and education sites.

Make sure Google can find all the pages on your site

Webmaster Tools helps you see your site the way Google sees it. If we have a problem accessing any of the pages on your site, we’ll let you know. And it goes both ways: You can tell us about pages on your site by submitting a Sitemap

Drive traffic to your site

We’ll show you who’s linking to you and how. Want to see which pages on your site get the most links? Which keyword searches drive the most traffic? We’ve got that too.

Build a Google-friendly site

Use our Content Analysis to identify potential issues with the content on your site. The robots.txt analyzer tool will help make sure you’re not accidentally blocking Googlebot from crawling your site. And our Help Center is your first stop for official Google guidelines on creating the very best sites possible.

Remove pages from Google’s search results

Things change. Pages get removed. Tell us about pages you don’t want in our index, and we’ll remove them from our search results.

And it’s free!

https://www.google.com/webmasters/tools/docs/en/about.html