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.
Information : Charset : ASCII was the first character encoding standard (also called character set).
ASCII defined 127 different alphanumeric characters that could be used on the internet: numbers (0-9), English letters (A-Z), and some special characters like ! ANSI (Windows-1252) was the original Windows character set, with support for 256 different character codes.
Domain is either you or your company's ID in the Internet, when you apply to connect to Internet, they will give you protocol number. Every device connected to Internet has an IP number.
Each computer has to have an IP number to connect with other computers. Alexa rank is a scoring framework that measuring an activity and making characterization as per this movement those Alexa Toolbar clients are going to sites.
That's why you should use alt tag on your all pictures, which you use in your website.
The links on the other websites are called external link.
It is more important and beneficial for your site to have this at a lower value.
It’s important to work on keeping this speed value as low as possible.
Information : Statistics regarding the size and concentration of HTML coding used.
Size : Shows the size of the HTML used on your site.