An HTML file is a web page coded in HTML that can be displayed in a web browser. The file is used to format text, tables, images, and other content that is displayed on the page. Most pages within static websites have an ".html" extension.
The HTML source code is parsed by the Web browser and is typically not seen by the user. If you want to view the HTML of a Web page, select "View Source" from the Web browser's View menu. Since HTML files are saved in a standard text format, they can be opened and edited with a basic text editor.
Common HTML Filenames:
index.html - The main, or index, HTML file that's loaded when a client Web browser requests a Web server directory. For example, when http://www.sampledomain.com/ is requested, the Web server loads http://www.sampledomain.com/index.html by default, unless it is configured to use a different file.
default.html - The index file often used by Windows Web servers such as Microsoft IIS.