Resources for Developers,
by Developers

Documenting web technologies, including CSS, HTML, and JavaScript, since 2005.

Featured Articles

New reference pages on MDN for JavaScript regular expressions

See the latest updates to the MDN reference pages about JavaScript regular expressions, including new sections on sub-features and browser compatibility information.

Using HTML landmark roles to improve accessibility

Learn what HTML landmark roles are, how they improve accessibility, and how you can include them on your website effectively.

Web APIs

Performance API

The Performance API is a group of standards used to measure the performance of web applications.

CSS

The font-palette CSS property allows specifying one of the many palettes contained in a font that a user agent should use for the font. Users can also override the values in a palette or create a new palette by using the @font-palette-values at-rule.

Latest news

Responsibly empowering developers with AI on MDNblog.mozilla.org
3 months ago
Introducing AI Help: Your Trusted Companion for Web Developmentdeveloper.mozilla.org
3 months ago
Introducing the MDN Playground: Bring your code to life!developer.mozilla.org
3 months ago

Contributor Spotlight

Yuji

MDN Web Docs has the most up-to-date and accurate information and the content is presented in an easy-to-understand manner. I also like that it's available in many languages (very important!).

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Resources for Developers, by Developers