Charset : This shows your sites code characters were created. In other words, which alphabet set was used, for example: Latin, Mandarin and Cyrillic. Use: It should be used in this form : <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />.
Code Type : This shows what type of coding was used in the design of your site.
HTML Version : This shows the version od coding you used in the design of your site.
Robots.txt : This is to let the robots.txt used by the search engines, know how to navigate your site. We advise that you use robots.txt.
Responsive : Shows whether or not your site which is compatible with desktop computers, is also compatible with tablet computers and mobile devices. Use: you can show this with the tag : <meta name="viewport" content="width=device-width, initial-scale=1.0" />.
PageRank : Google ranks sites on a scale of 0-10. The higher the rank, the better and more beneficial this site is considered for Google.
Analytic : Google, along with being the worlds largest search engine also provides many other great services. One of these provided services is Analytic. With a tiny code added to your site, Analytic allows you to track all user data on your site. A few of its free services are: