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MDN
MDN Web Docs documents open web technologies, including HTML, CSS, JavaScript, and APIs for websites and web apps.
About MDN
MDN Web Docs is a documentation site for open web technologies. The homepage states that it documents CSS, HTML, and JavaScript, and it covers APIs for websites and progressive web apps. The site has been documenting these technologies since 2005.
The homepage shows featured articles, a blog, and news items on topics such as the Navigation API, the Trusted Types API, CSS anchor positioning, and view transitions. It also lists recent changes to MDN's content repositories and includes translated content, such as French updates to Window API pages. The homepage also announces an MCP server that brings MDN documentation and browser compatibility data into an editor or IDE for use with an LLM or coding agent. The excerpt does not describe setup steps or every topic the site covers.
Key features
- Reference documentation for HTML, CSS, and JavaScript
- Documentation for Web APIs, including the Navigation API and Trusted Types API
- Articles on CSS anchor positioning and view transitions
- MCP server that brings MDN documentation into an editor or IDE
- Browser compatibility data included with MDN documentation
- Translated content, such as French updates to Window API pages
Best for: Web developers and people learning web development who need reference documentation for HTML, CSS, JavaScript, and Web APIs.
Good for
- Covers HTML, CSS, JavaScript, and Web APIs in one site
- Publishes news and articles about recent web platform features
- Shows recent changes to its content repositories on the homepage
Watch out for
- The homepage does not state pricing
- The homepage excerpt does not list every topic the site covers
- Translated content appears for some pages, and the homepage does not say how complete the translations are
MDN at a glance
- Website
- developer.mozilla.org
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Developers
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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MDN FAQ
Which technologies does MDN document?
The homepage states that MDN documents CSS, HTML, and JavaScript, along with APIs for websites and progressive web apps.
Does MDN have an MCP server?
The homepage announces an MCP server that brings MDN documentation and browser compatibility data into an editor or IDE for use with an LLM or coding agent.
Is MDN content available in other languages?
Some MDN pages have translated versions. The homepage shows recent French translation updates for several Window API pages.
Is something wrong or out of date?
Tell us and an editor will check it.
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