Google Webmaster Tools is a superb tool from Google for SEO, you can use it to know a lot of info about your site.
1- Go to link URL Google Webmaster and
Sign up by google account
2- Add A PROPERTY Your site
3- Verify your ownership of http://?????????
- You will see how your site appears within the search results.
– Check which structured data types have errors.
– Drill down to specific errors.
– Fix the markup on your site.
– Verify that the updated markup is correct
7- Rich Cards Report
The rich cards report helps you fix errors in any rich card structured data that Google has found on your site. The report also points out areas where you could provide more information to take fuller advantage of Google’s rich card platform.
You can use Data Highlighter to tag data about a product, such as its description and price. Then Google can present your data more attractively and in new ways
9- HTML Improvements
The HTML Improvements page shows you potential factors which Google found when crawling and indexing your site. We recommend that you review this report regularly to identify changes that can potentially increase your rankings in Google search.
10-Use Fetch as Google for websites
The Fetch as Google tool enables you to test how Google crawls or renders a URL on your site. You can use Fetch as Google to see whether Googlebot can access a page on your site, how it renders the page, and whether there is any page resources
11- Submit a sitemap
A sitemap is a file where you can list the web pages of your site to tell Google and other search engines about the organization of your site content. Search engine web crawlers like Googlebot read this file to more intelligently crawl your site.
Authorization reference to build Site map from google Here