HyperText Markup Language or HTML is the basic programming language of the World Wide Web. It's used to specify the basic layout and functionality of a website. You can edit an HTML file using any plain text editor or a specialized tool that outputs HTML based on your input.
Modern web browsers understand three programming languages. HTML is used to code the basic layout of a web page and introduce functional elements such as forms, images and sections of text. It can also be used for some style specifications.
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Another language called cascading style sheets or CSS is used to further style how a page looks on a screen or when printed to paper. CSS can be embedded in HTML or referred to by HTML code and stored in separate files.
Edit an HTML File
They can be edited with any plain text editing software, including Notepad on Windows, TextEdit on macOS computers, and popular text editors such as Emacs, Vim and Sublime Text. Typically, HTML files are saved with a .html extension. Avoid using word processing tools such as Microsoft Word and Google Docs to edit HTML because they're not as well suited to dealing with plain text as they are to constructing elaborate documents with custom fonts and formatting.
Various tools make it possible to generate HTML without writing it directly. Some web design tools like Adobe's Dreamweaver and online tools such as Wix and Squarespace automatically output HTML based on what users enter through a visual interface.
Others, like some software for web forums and wikis, automatically take other, simpler formatting languages such as Markdown and translate them into HTML and CSS. Web server software, such as Django and Rails, can also automatically generate HTML based on configuration settings and data.