MDN Web Docs

MDN Web Docs, previously Mozilla Developer Network and formerly Mozilla Developer Center, is a documentation repository for web developers used by Mozilla, Microsoft, Google, and Samsung. The project was started by Mozilla in 2005[1] as a unified place for documentation about open web standards, Mozilla's own projects, and developer guides.[2] In 2017, Microsoft, Google, and Samsung announced that they would shut down their own documentation projects and move all their documentation to MDN Web Docs.[3]

MDN Web Docs
MDN Web Docs.svg
Type of site
Available inEnglish
Other locales are unmaintained as of December 14, 2020
RegistrationOptional, required to edit content
Launched2005; 16 years ago (2005)
Current statusOnline
Content license
CC-BY-SA v2.5+ et al.
Written inReact
SCSS, JSX, JavaScript, Python

MDN Web Docs content is maintained by Mozilla and Google employees and volunteers (community of developers and technical writers). Topics include HTML5, JavaScript, CSS, Web APIs, Django, Node.js, WebExtensions and MathML, and other.[4]


In 2005, Mozilla Corporation started the project under the name Mozilla Developer Center.[1] Mozilla Corporation still funds servers and employs staff working on the projects.

The initial content for the website was provided by DevEdge, for which the Mozilla Foundation was granted a license by AOL.[5][1] The site now contains a mix of content migrated from DevEdge and, as well as original and more up-to-date content.[6][7] Documentation was also migrated from

On Oct 3, 2016, Brave browser added Mozilla Developer Network as one of its default search engines options.[8]

In 2017, MDN Web Docs became the unified documentation of web technology for Google, Samsung, Microsoft, and Mozilla.[9][3] Microsoft started redirecting pages from MSDN to MDN.[10]

In 2019, Mozilla started Beta testing a new reader site for MDN Web Docs written in React (instead of jQuery; some jQuery functionality was replaced with Cherio library). The new site is scheduled to release on December 14, 2020. Until December 14 2020, contributors can continue editing articles using the old editor.[11] After December 14, 2020, all content will be stored in git repository hosted on GitHub and contributions will have form of pull requests.

See alsoEdit


  1. ^ a b c Mitchell Baker (2005-02-23). "DevMo and DevEdge updates". Retrieved 2008-05-31.
  2. ^ Willison, Simon (2005-09-15). "The Mozilla Developer Center". SitePoint. Retrieved 2012-08-19.
  3. ^ a b Tung, Liam (2017-10-19). "Developers rejoice: Microsoft, Google, Mozilla are putting all their web API docs in one place". ZDNet.
  4. ^ Ten Things Developers should know about the Mozilla Developer Network (MDN)
  5. ^ "About". Mozilla Developer Center. Archived from the original on 2007-10-20. Retrieved 2009-01-30.
  6. ^ "DevEdge". Mozilla Developer Center. Archived from the original on 2007-10-26. Retrieved 2009-01-30.
  7. ^ Deb Richardson (2006-02-10). "Digging through the DevEdge archives". Google Groups. Retrieved 2008-05-31.
  8. ^ "Brave Browser 0.12.3 Release Note". Github. Retrieved 16 August 2017.
  9. ^ Knox, Dru (2017-10-18). "Building unified documentation for the web". Chromium Blog.
  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.