HyperText Markup Language (HTML) is the simplest part of what makes web pages on the World Wide Web. It is a markup language, which means it has a mix of normal language that people can read, and special language that tells computer programs what to do.

A web browser is the program that reads the special language in HTML. This language tells the web browser how the web page should look. The web page can include writing, links, pictures, and even sound and video. It can also have writing that is not shown in the web page, which tells people about the web page.