Check out this great tool for checking you key meta tags. Often you will hear that Google only looks at the front end of the website and this is an important area too, you need website that is keyword rich with great relevant content and the speed of the website also viewability of the website is also important. However the backend of the website is not only important to Google, but to many other search engines out there and you want to be indexed everywhere. All search engines index differently, therefore you want to have your fingers in all pies and make sure your website has layered SEO built on every page.

https://dnschecker.org/google-serp-preview-optimization-tool.php