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Introduction to HTML

HTML (HyperText Markup Language) is the language used to structure content on the web.
Every website you visit — from blogs to complex web apps — is built on HTML.

In this lesson, we’ll focus on what HTML is, why it exists, and how it fits into the web.

What is HTML?

HTML is a markup language, not a programming language.
It describes the structure and meaning of content, such as headings, paragraphs, links, images, and lists.

Browsers read HTML documents and turn them into the web pages you see on your screen.

Why does HTML matter?

HTML is the foundation of the web because:

  • it defines the structure of every web page
  • it works together with CSS and JavaScript
  • it is accessible, readable, and standardized

Without HTML, there would be no web pages — only raw data.

How HTML fits into the web

HTML works alongside:

  • CSS to control layout and visual appearance
  • JavaScript to add interactivity and behavior

Together, these three technologies form the core of frontend web development.

What you’ll learn next

In the next lessons, you’ll explore:

  • the structure of an HTML document
  • common HTML elements and their purpose
  • how browsers interpret HTML

Let’s start building.