As mentioned some time ago and as recently announced on the MathML and MediaWiki mailing lists, a MathML mode with SVG/PNG fallback is now available on Wikipedia. In order to test it, you need to log in with a Wikipedia account and select the mode in the "Math" section of your preferences.

Some quick notes for Mozillians:

Although Mozilla intern Jonathan Wei has done some work on MathML accessibility and that there are reports about work in progress to make Firefox work with NVDA / Orca / VoiceOver, we unfortunately still don't have something ready for Gecko browsers. You can instead try the existing solutions for Safari or Internet Explorer (ChromeVox and JAWS 16 beta are supposed to be MathML-aware but fail to read the MathML on Wikipedia at the moment).

By default, the following MATH fonts are tried: Cambria Math, Latin Modern Math, STIX Math, Latin Modern Math (Web font). In my opinion, our support for Cambria Math (installed by default on Windows) is still not very good, so I'd recommend to use Latin Modern Math instead, which has the same "Computer Modern" style as the current PNG mode. To do that, go to the "Skin" section of your preferences and just add the rule

`math { font-family: Latin Modern Math; }`

to your "Custom CSS". Latin Modern Math is installed with most LaTeX distributions, available from the GUST website and provided by the MathML font add-on.You can actually install various fonts and try to make the size and style of the math font consistent with the surrounding text. Here are some examples:

`/* Asana Math (Palatino style) */ .mw-body, mtext { font-family: Palatino Linotype, URW Palladio L, Asana Math; } math { font-family: Asana Math; } /* Cambria (Microsoft Office style) */ .mw-body, mtext { font-family: Cambria; } math { font-family: Cambria Math; } /* Latin Modern (Computer Modern style) */ .mw-body, mtext { font-family: Latin Modern Roman; } math { font-family: Latin Modern Math; } /* STIX/XITS (Times New Roman style) */ .mw-body, mtext { font-family: XITS, STIX; } math { font-family: XITS Math, STIX Math; } /* TeX Gyre Bonum (Bookman style) */ .mw-body, mtext { font-family: TeX Gyre Bonum; } math { font-family: TeX Gyre Bonum Math; } /* TeX Gyre Pagella (Palatino style) */ .mw-body, mtext { font-family: TeX Gyre Pagella; } math { font-family: TeX Gyre Pagella Math; } /* TeX Gyre Schola (Century Schoolbook style) */ .mw-body, mtext { font-family: TeX Gyre Schola; } math { font-family: TeX Gyre Schola Math; } /* TeX Gyre Termes (Times New Roman style) */ .mw-body, mtext { font-family: TeX Gyre Termes; } math { font-family: TeX Gyre Termes Math; }`

We still have bugs with missing fonts and font inflation on mobile devices. If you are affected by these bugs, you can force the SVG fallback instead:

`span.mwe-math-mathml-inline, div.mwe-math-mathml-display { display: none !important; } span.mwe-math-mathml-inline + .mwe-math-fallback-image-inline { display: inline !important; } div.mwe-math-mathml-display + .mwe-math-fallback-image-display { display: block !important; }`

You might want to install some Firefox add-ons for copying MathML/LaTeX, zooming formulas or configuring the math font.

Finally, don't forget to report bugs to Bugzilla so that volunteers can continue to improve our MathML support. Thank you!