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About MDN
The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.
2026-07-01 -
MDN Blog
The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.
2026-07-01 -
MDN Web Docs
The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps.
2026-07-01 -
Celebrating 20 years of MDN
MDN turns 20! Let's look at how we started, how MDN became the most trusted resource for web developers, the impact it's had on the open web, and yes, there's cake, too.
2026-07-01 -
Web APIs | MDN
When writing code for the Web, there are a large number of Web APIs available. Below is a list of all the APIs and interfaces (object types) that you may be able to use while developing your Web app or site.
2026-07-01 -
Web technology for developers | MDN
The open Web presents incredible opportunities for developers. To take full advantage of these technologies, you need to know how to use them. Below you'll find links to our Web technology documentation.
2026-07-01 -
Websites & Communications Terms of Use — Mozilla
Accept All Additional Cookies Reject All Additional Cookies Cookie settings Menu Products Close Products menu Firefox browsers Mozilla VPN Mozilla Monitor Firefox Relay MDN Plus Thunderbird … You may also recognize our Websites by nicknames such as Bugzilla@Mozilla, BMO, MozWiki, MoPad, MozReps, MDN, Marketplace, One and Done, SUMO, and AMO.
2026-07-01 -
Community Participation Guidelines — Mozilla
Accept All Additional Cookies Reject All Additional Cookies Cookie settings Menu Products Close Products menu Firefox browsers Mozilla VPN Mozilla Monitor Firefox Relay MDN Plus Thunderbird
2026-07-01