Question

HTML document is saved using.....extension​

Answer 1

HTML document is saved using .html extension.

• An HTML document is a file containing a markup language for the text. HTML co-de is based on tags, or hidden keywords, that provide document formatting instructions. The tag starts with an angle bracket and a 'smaller' sign: '<'. The marker ends with an angle bracket and a 'larger than' 'sign. Markers tell the processing program, usually a web browser, what to do with the text.
• HTML is defined by the World Wide Web Consortium, an organization that regulates Internet standards. Each version of HTML has a set of definitions. Note that HTML is not a programming language. Although we often refer to HTML markup as HTML co-de, programming languages ​​require the processing of logical statements and statistics. HTML allows the developer to make the text look attractive and fun. In most cases, editing in an HTML document is done through JavaScript.

Answer 2

HTML document is saved using either  .htm OR .html extension​.

Although an HTML file is nothing more than plain ASCII text, web browsers require that all HTML files have a specific file extension in order to recognize them. Either .htm or .html is the extension for this file.