MDN Web Docs

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MDN Web Docs
MDN Web Docs.svg
Type of site
Available inmore than 25 languages
RegistrationOptional, required to edit content
Launched2005; 15 years ago (2005)
Current statusOnline
Content license
CC-BY-SA v2.5+ et al.
Written inPython

MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center, is the official Mozilla website for development documentation of web standards and Mozilla projects.[1]


MDN Web Docs is a resource for developers, maintained by the community of developers and technical writers and hosting many documents on a wide variety of subjects, such as: HTML5, JavaScript, CSS, Web APIs, Django, Node.js, WebExtensions and MathML. For mobile web developers, MDN provides documentation on subjects such as building an HTML5 mobile app, building a mobile add-on, and location-aware apps.[2]


The project (originally called Mozilla Developer Center) was started in 2005, and initially led by Mozilla Corporation employee Deb Richardson in 2005. Documentation efforts have been led by Eric Shepherd since 2006.[3]

The initial content for the website was provided by DevEdge, for which the Mozilla Foundation was granted a license by AOL.[4][3] The site now contains a mix of content migrated from DevEdge and, as well as original and more up-to-date content.[5][6] Documentation was also migrated from

MDN has a discussion forum and an IRC channel #mdn on the Mozilla IRC Network. MDN is funded by the Mozilla Corporation with servers and employees.

With the Oct 3, 2016 release, Brave features Mozilla Developer Network as one of its default search engines options.[7]

In 2017, MDN Web Docs became the unified documentation of web technology for Google, Samsung, Microsoft, and Mozilla.[8][9] Microsoft started redirecting pages from MSDN to MDN.[10]

In 2019, Mozilla started a Beta of a rewrite MDN Web Docs site for readers in React (instead of jQuery). Contributors can edit the site contents using the old editor, which is still supported.[11]


  1. ^ Willison, Simon (2005-09-15). "The Mozilla Developer Center". SitePoint. Retrieved 2012-08-19.
  2. ^ Ten Things Developers should know about the Mozilla Developer Network (MDN)
  3. ^ a b Mitchell Baker (2005-02-23). "DevMo and DevEdge updates". Retrieved 2008-05-31.
  4. ^ "About". Mozilla Developer Center. Archived from the original on 2007-10-20. Retrieved 2009-01-30.
  5. ^ "DevEdge". Mozilla Developer Center. Archived from the original on 2007-10-26. Retrieved 2009-01-30.
  6. ^ Deb Richardson (2006-02-10). "Digging through the DevEdge archives". Google Groups. Retrieved 2008-05-31.
  7. ^ "Brave Browser 0.12.3 Release Note". Github. Retrieved 16 August 2017.
  8. ^ Knox, Dru (2017-10-18). "Building unified documentation for the web". Chromium Blog.
  9. ^ Tung, Liam (2017-10-19). "Developers rejoice: Microsoft, Google, Mozilla are putting all their web API docs in one place". ZDNet.
  10. ^ Erika Doyle Navara (2017-10-18). "Documenting the Web together". Windows Blogs.
  11. ^ R, Bhagyashree (2019-07-17). "Mozilla's MDN Web Docs gets new React-powered frontend, which is now in Beta". Packt Hub. Retrieved 2019-07-18.