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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesHTML, or HyperText Markup Language, is the language used to define the structure and meaning of content on a web page. It tells a browser which parts are headings, paragraphs, links, images, lists, forms, and other elements. CSS generally controls how those parts look, while JavaScript adds behavior.
In this tutorial, you’ll see how an HTML document is put together, what tags and elements mean, and why choosing meaningful structure matters.
What HTML does on a website
Think of HTML as labels and relationships for a document. It identifies a title as a heading, a group of sentences as a paragraph, and a destination as a link. A browser reads that structure to present the page; assistive technologies and other tools can use it to understand and navigate the content too.
HTML is one part of a web page, not the whole thing:
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| Technology | Primary role |
|---|---|
| HTML | Structures content and conveys its meaning |
| CSS | Controls presentation, such as layout, colors, and typography |
| JavaScript | Adds behavior and interaction |
The boundaries can overlap in real projects, but this division is a useful starting point. MDN’s HTML overview explains HTML’s role and points to related web technologies.
What an HTML page looks like
Here is a small complete example. Save it as index.html and open it in a browser to see the page.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>A Small HTML Page</title>
</head>
<body>
<header>
<h1>A Small HTML Page</h1>
</header>
<main>
<p>HTML gives this content structure and meaning.</p>
<p>Visit <a href="https://example.com/">an example page</a>.</p>
<ul>
<li>A heading</li>
<li>A paragraph</li>
</ul>
</main>
<footer><p>End of page.</p></footer>
</body>
</html>The document’s main parts
<!doctype html>identifies the document as HTML.<html lang="en">contains the page and declares its language.<head>contains information about the document, including character encoding, viewport settings, and its title. This information is not the page’s main visible content.<body>contains the content displayed as the page.<header>,<main>, and<footer>identify meaningful regions of the page.
Tags, elements, and attributes
A tag is the markup spelling inside angle brackets, such as <p>. An element is the structured unit represented in the document: in <p>Hello.</p>, the paragraph element includes its opening tag, content, and closing tag.
Many elements have an opening and closing tag, but some, such as <img>, do not wrap text and have no closing tag. Attributes add information to an element. For example, href supplies a link destination in <a href="https://example.com/">Visit</a>; the visible word “Visit” is the link text.
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Common elements to learn first
<h1>to<h6>mark headings at different levels. Choose levels to reflect the page’s section structure, rather than just the size you want the text to appear.<p>marks a paragraph.<a>creates a link; itshrefattribute identifies the destination.<img>embeds an image. Thesrcattribute identifies the image file, and descriptive alternative text is important when the image conveys information.<ul>and<ol>create unordered and ordered lists; each list item belongs in an<li>element.<form>groups controls used to collect or submit information.
These elements give you enough vocabulary to make a simple page and begin exploring more detailed HTML topics.
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Why semantic HTML matters
Semantic HTML means choosing elements for what their content or region means, not merely for how it looks. A page with a meaningful heading hierarchy and clearly identified regions is easier to understand and navigate than one built from undifferentiated containers.
The W3C Web Accessibility Initiative’s Page Structure Tutorial explains how logical headings and meaningful structure can help screen-reader users, keyboard users, people with cognitive and learning disabilities, and people using reading modes. It also notes that structure can help search engines index a page. A semantic element by itself does not guarantee accessibility: the content and its relationships still need to make sense.
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How browsers process HTML
Browsers interpret HTML documents according to the HTML syntax and standard. A document served with the text/html media type is processed as HTML. The WHATWG introduction describes the standard as defining “an abstract language for describing documents and applications, and some APIs for interacting with in-memory representations of resources that use this language.” Read the HTML Standard introduction for the distinction between HTML and XML syntax.
For beginners, the practical point is that ordinary web pages generally use HTML syntax. XML syntax is different and has different parsing behavior; it is not necessary to learn it before building a basic HTML page.
HTML is maintained as the WHATWG HTML Living Standard, rather than as a single frozen version. Its index reported “Last Updated 8 September 2026” when checked. It covers document structure, elements, interaction, loading, APIs, syntax, and rendering.
What to practice next
- Create a small page with a document title, one main heading, and a few paragraphs.
- Add a link, an image, and a list. Give links meaningful text and images suitable alternative text.
- Divide the page into appropriate regions, such as
header,main, andfooter, and organize headings according to the content. - Continue with attributes, page metadata, and forms once you are comfortable with the basic structure.
MDN’s Structuring content with HTML module assumes no prior HTML knowledge and works through syntax, metadata, headings, paragraphs, lists, and other text structure. If you cannot create a local file, its guidance suggests trying an online editor such as CodePen or JSFiddle.
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