https://developer.mozilla.org/en-US/blog/mdn-turns-20/ * Skip to main content * Skip to search Open main menu * ReferencesReferences + Overview / Web Technology Web technology reference for developers + HTML Structure of content on the web + CSS Code used to describe document style + JavaScript General-purpose scripting language + HTTP Protocol for transmitting web resources + Web APIs Interfaces for building web applications + Web Extensions Developing extensions for web browsers + Accessibility Build web projects usable for all + Web Technology Web technology reference for developers * LearnLearn + Overview / MDN Learning Area Learn web development + MDN Learning Area Learn web development + HTML Learn to structure web content with HTML + CSS Learn to style content using CSS + JavaScript Learn to run scripts in the browser + Accessibility Learn to make the web accessible to all * PlusPlus + Overview A customized MDN experience + AI Help Get real-time assistance and support + Updates All browser compatibility updates at a glance + Documentation Learn how to use MDN Plus + FAQ Frequently asked questions about MDN Plus * Curriculum ^New * Blog * Tools + Playground Write, test and share your code + HTTP Observatory Scan a website for free + AI Help Get real-time assistance and support Search MDN[ ]Clear search inputSearch Theme * Log in * Sign up for free In this article * Time to break out the cake * Sharing the love Stylized 20 with an MDN dino logo wearing a birthday hat, 'MDN turns 20' title. Celebrating 20 years of MDN Author avatarJoe WalkerJuly 23, 20253 minute read This month, we're celebrating a big anniversary: 20 years of MDN. Twenty years ago, the web was growing into a complex, interactive platform that was getting easier to access, but more challenging to build for. MDN started as a community-driven wiki, helping developers navigate that rapidly-evolving web with an emphasis on web standards. As the web platform matured and grew, so did the vast amount of knowledge captured on MDN and the community of people who read and contribute to it. Today, there's nearly 14,000 pages of documentation, more than 33,000 localized articles, and compatibility data on close to 18,000 features that make MDN the most trusted and comprehensive resource available for web developers. We've helped people of every skill level and background build a better web for two decades now, driving an open ecosystem that billions of people use to work, learn, shop, socialize, and share their beloved creations. Time to break out the cake What would a birthday celebration be without cake? Well in the web world, cakes have a very special place. There's a long-standing tradition among browser makers of sending cakes to each other to mark major milestones. A good cake matters a lot to keep a spirit of collaboration alive between teams who compete at times, but ultimately build towards one open web that everybody can enjoy. Microsoft sent Mozilla cakes for Firefox 2, 3, and 4, and we also sent them one for IE10: Cakes delivered to browser vendors marking major milestones And what better way to celebrate an MDN birthday, than our own birthday cake from our friends at web.dev: A birthday cake decorated with the words 'Happy 20th birthday MDN, from web.dev' A very big thank you to the web.dev team for the delicious cake, and to all the partners, colleagues, and community members who make MDN what it is today. It would be hard to mention every single person who has worked on and contributed to MDN, and none of it happens without our global community. The MDN team and partners celebrate with cake in Berlin MDN reaches millions of developers each month and over 100,000 contributors have interacted with us through our GitHub organization. From the MDN team, a very big thank you to every single one of you. Your passion, curiosity, and direct contributions are what keep MDN going. Here's to 20 more years of empowering developers and building a better web together. Sharing the love We'd love to hear about your experiences and memories of MDN over the years; tag us on X, Mastodon or Bluesky if you have stories to share. There's never been a better time to join us in collaboration on web platform docs. 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