HTML (short for HyperText Markup Language) is the main markup language for web pages. The basic building blocks of web pages are the so-called HTML elements. HTML itself is written in the form of HTML elements – these consist of tags that are enclosed by square brackets, for example <center> and </center>.

The purpose of a web browser is then to read these HTML tags and interpret them for web pages. The HTML tags themselves are not displayed by the web browser. The first tag is always used to begin the action and the second tag, which has a slash, is used to end the action. Everything in between these tags then works with their function.

With HTML, images, video, interactive elements, quotes, paragraphs, lists, and other visual treatments of text can be embedded in web pages.