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MDN's content is entirely available under various open source licenses. This section covers the types of content we provide and what licenses are in effect for each.
Documentation and articles
Note: MDN content has been prepared with the contributions of authors from both inside and outside Mozilla. Unless otherwise indicated, the content is available under the terms of the Creative Commons Attribution-ShareAlike license (CC-BY-SA), v2.5 or any later version.
When reusing MDN content, you need to ensure two things:
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Please attribute "Mozilla Contributors" and include a hyperlink (online) or URL (in print) to the specific wiki page for the content being sourced. For example, to provide attribution for this article, you can write:
- Your reuse is published under the same license as the original content—CC-BY-SA v2.5 or any later version.
Code samples and snippets
Code samples added on or after August 20, 2010 are in the public domain (CC0). No licensing notice is necessary, but if you need one, you can use: "Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/".
Code samples added before August 20, 2010 are available under the MIT license; you should insert the following attribution information into the MIT template: "© <date of last wiki page revision> <name of person who put it in the wiki>".
Since the launch of the new Yari MDN platform on December 14 2020, there is currently no way to determine which one you need. We are working on this and will update this content soon.
If you wish to contribute to this wiki, you must make your documentation available under the Attribution-ShareAlike license (or occasionally an alternative license already specified by the page you are editing), and your code samples available under Creative Commons CC-0 (a Public Domain dedication). Adding to this wiki means you agree that your contributions will be made available under those licenses.
Some older content was made available under a license other than those described above; these are indicated at the bottom of each page by way of an Alternate License Block.
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