A lot of modern software comes with XML parsers (only if they're relevant, obviously). It would take major reworking of the software in question to incorporate XML parsers. Some modern browsers, PC games, and general applications that store data use XML parsers, and come with them after installation.

www.engineeringtoolbox.com/viscosity-converter-d_413.html

HTML is generally interpreted using a "parser." The parser reads the text, and puts it together using a series of "tokens" or in the case of an HTML document, "tags" or "elements."

Parsing (also call syntactical analysis) is used frequently in Computer Science.

The individual browser's use various parsers, changing from vendor to vendor and sometimes from one version to the next. This difference is precisely why different browsers will render the same HTML different way.

"Here your question is not clear. But if you are talking about converting the HTML document's extension name from .HTML to .com, then it is not possible.

'.HTML' is an extension name that gives an identity to the document that this an HTML document, and only then it will be recognized by the browsers and the parsers.

'.com' is the extension for a domain (used for commercial purposes), Similarly there can be many different domain name extensions like dot gov stands for government, dot edu is for education etc.

If you have developed a website, then you have to buy a server space where you can upload all you files. Also if you want your website to be recognized by the visitors by a special '.com' name, then you have to by a domain name for your website."