An HTML file is a webpage coded in HTML that can be displayed in a web browser. It is used to format text, tables, images, and other content that is displayed on a webpage. HTML files are widely used on the web as most pages within static websites have an ".html" extension.

HTML file open in Adobe Dreamweaver CC 2017 HTML files are saved in a standard text format and consists of tags used to define the structure of a webpage. The files can be opened and edited with a basic text editor but are typically opened by source code editors that come with features that make it easier for developers to code. HTML source code is parsed by a web browser and is typically not seen by the user. If you want to view the HTML of a webpage, select "View Source" from the web browser's View menu.