HTML cheatsheet for syntax and common tasks - HTML | MDN

developer.mozilla.org

MDN | MDN Curriculum | Playground | HTTP Observatory | About MDN | Advertise with us | Community | Blog | <section> | MDN Plus | MDN Discord | HTML: Markup language | Elements | Global attributes | Attributes | See all… | Responsive images | HTML cheatsheet | Date & time formats | See all… | SVG | MathML | XML | CSS: Styling language | Properties | Selectors | At-rules | Values

Tin mới

HTML: Markup language

See all HTML references

Date & time formats

See all HTML guides

CSS: Styling language

See all CSS references

See all CSS guides

Centering an element

JavaScript: Scripting language

Standard built-in objects

Expressions & operators

Statements & declarations

See all JavaScript references

Control flow & error handing

Loops and iteration

Working with objects

See all JavaScript guides

Web APIs: Programming interfaces

Service worker API

Using the Web animation API

Using the Fetch API

Working with the History API

Using the Web speech API

All web technology

Progressive web apps

Learn web development

Getting started modules

Structuring content with HTML module

CSS styling basics module

Dynamic scripting with JavaScript module

Border-image generator

Border-radius generator

Box-shadow generator

Color format converter

HTML reference documentation

While using HTML it can be very handy to have an easy way to remember how to use HTML tags properly and how to apply them. MDN provides you with extended HTML reference documentation as well as a deep instructional set o

Learn how to contribute

This page was last modified on Nov 3, 2025 by MDN contributors.

Constraint validation

Content categories

Quirks and standards modes

Define terms with HTML

Use data attributes

Use cross-origin images

Add a hitmap on top of an image

Author fast-loading HTML pages

virtualkeyboardpolicy

writingsuggestions

<input type="button">

<input type="checkbox">

<input type="color">

<input type="date">

▶ a-example sample