HTML Reference

HTML tag, attribute, character, color and compatibility reference guides.

Quick Answer

What is the HTML Reference?

Use this reference collection to look up selected HTML elements, attributes, character encoding, colors and compatibility guidance. Legacy element pages are labelled. Consult the current HTML Standard for the full element definitions.

Browse the element and attribute guides for syntax and examples. The collection includes historical material; verify current conformance and browser behavior when using it in a new project.

Tags HTML guides

Attrs Reference guides

Check Check each feature

Quick Reference

📄 Document Structure

Tag	Description
<!DOCTYPE>	Defines the document type
<html>	Defines an HTML document
<head>	Contains metadata/information for the document
<title>	Defines a title for the document
<body>	Defines the document's body
<meta>	Defines metadata about an HTML document

📝 Text Content

Tag	Description
<h1> to <h6>	Defines HTML headings
<p>	Defines a paragraph
<br>	Inserts a single line break
<hr>	Defines a thematic change in the content
<strong>	Defines important text
<em>	Defines emphasized text

🔗 Links and Media

Tag	Description
<a>	Defines a hyperlink
<img>	Defines an image
<video>	Defines a video or movie
<audio>	Defines sound content
<iframe>	Defines an inline frame
<link>	Defines the relationship between a document and an external resource

📝 Forms

Tag	Description
<form>	Defines an HTML form for user input
<input>	Defines an input control
<textarea>	Defines a multiline input control (text area)
<button>	Defines a clickable button
<select>	Defines a drop-down list
<label>	Defines a label for an <input> element

Global Attributes

Global attributes are attributes that can be used with any HTML element:

Attribute	Description
class	Specifies one or more classnames for an element
id	Specifies a unique id for an element
style	Specifies an inline CSS style for an element
title	Specifies extra information about an element
lang	Specifies the language of the element's content
dir	Specifies the text direction for the content in an element
hidden	Specifies that an element is not yet, or is no longer, relevant
data-*	Used to store custom data private to the page or application

Complete Reference Sections

📋 Tags and Elements

HTML Tag List — Alphabetical collection of current and historical element entries.
HTML Attributes — Attribute guides and examples.
Global Attributes - Attributes that work with any HTML element
HTML Events - JavaScript event handlers for HTML elements

🎨 Styling and Media

HTML Colors - Color names, hex codes, and RGB values
HTML Canvas - Canvas API reference
Audio/Video - Media elements and attributes

🌐 Web Standards

HTML Doctypes - Document type declarations
Character Sets - HTML character encoding
URL Encoding - URL encoding reference
Language Codes - ISO language codes

🔧 Tools and Utilities

Browser Support - HTML element browser compatibility
HTTP Messages - HTTP status codes and messages
HTTP Methods - GET, POST, PUT, DELETE reference
PX to EM Converter - Convert between CSS units
Keyboard Shortcuts - Useful keyboard shortcuts for web development

How to Use This Reference

Find the Element

Use the navigation or browse the categories above to find the HTML element you're looking for.

Check Browser Support

Each element page includes browser support information to ensure compatibility.

Try the Examples

All reference pages include practical examples that you can test in our code playground.

💡 Quick Tip:

Use Ctrl+F (or Cmd+F on Mac) to quickly search for specific tags or attributes on any reference page.