Extension:Math

The Math extension provides support for rendering mathematical formulæ. An overview of what can currently be done with this extension is found at the English Wikipedia's documentation.

This article documents how to install, configure and test recent versions of this extension.

For advanced usages and documentation of old versions refer to .

Installation
You should additionally go to the page Special:MathStatus to see whether all of the components of the Math extension now work.

For any problems you see, the best option is to create a task on https://phabricator.wikimedia.org

Configuration
Beginning from MW 1.23+ you can use a Mathoid server that uses MathJax to convert texvc input on the server side to MathML+SVG rendering. Mathoid is the rendering mode that is going to be used on future Wikipedia. For that the following settings are recommended:

Check out mathoid>Special:MyLanguage/Mathoid|Mathoid to find instructions how to run your own Mathoid server.

Viewing math
The Math extension tries to deliver MathML output, with fallback to SVG or PNG images respectively.

Depending on the capabilities of the device you are using, the sort of output is chosen.

Basic math support works for all browsers. However, for optimal rendering specific tuning may be needed:

Accessibility support is provided by NVDA, VoiceOver or Orca. Additionally, NVDA requires the MathPlayer plugin to read mathematics.
 * For Firefox or other Gecko browsers, it is required to install the [https://addons.mozilla.org/en-US/firefox/addon/native-mathml/ Native MathML extension] and [https://developer.mozilla.org/en-US/docs/Mozilla/MathML_Project/Fonts math fonts].


 * For Safari or other WebKit browsers, you may also install math fonts and enable native MathML rendering by ext>Special:MyLanguage/Extension:Math/advancedSettings#CSS for the MathML with SVG fallback mode|inserting some CSS rules into the custom style sheet of your browser preference.

Accessibility support is provided by the VoiceOver screen reader but not by Orca yet.


 * For Chrome you must ext>Special:MyLanguage/Extension:Math/advancedSettings#CSS for the MathML with SVG fallback mode|insert some CSS rules into the custom style sheet of your browser preference in order to get accessibility support via [http://www.chromevox.com/ ChromeVox] or visual rendering via the [https://chrome.google.com/webstore/detail/math-anywhere/gebhifiddmaaeecbaiemfpejghjdjmhc MathJax plugin].


 * In some versions of Internet Explorer, it is possible to use [https://www.dessci.com/en/products/mathplayer/</> MathPlayer] as an assistive technology.

Tips and tricks

 * You can use the MathML copy addon to copy formulae to other applications such as Mircosoft Word (video), or Google docs with the g(Math) plugin (video).

Forcing a re-render of equations
Specifying the URL-parameter action=purge does not force the math equation to re-render the math tags. If a complete re-rendering of the math tags is desired the URL-parameter action=purge&mathpurge=true has to be passed. Be aware that this might cause side effects with other pages since the math extension uses the hash of the input TeX-input-string as the caching key. e.g. if you would force the re-rending with mathpurge option for a page containing the equation, the new rendering result would be used on all other pages containing   after the individual page caches are invalidated.

Error reporting
If something is wrong with the math extension you can report that at [<tvar|phabricator>https://phabricator.wikimedia.org/maniphest/task/create/?projects=MediaWiki-extensions-Math</> Phabricator]. In addition you should check how your problem relates to the automated unit tests that are generated from the page math-test>Special:MyLanguage/Extension:Math/CoverageTest</>|CoverageTest.