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<div class="section" id="mathjax-font-support">
<span id="font-support"></span><h1>MathJax Font Support<a class="headerlink" href="#mathjax-font-support" title="Permalink to this headline">¶</a></h1>
<p>MathJax currently supports the following fonts:</p>
<ul class="simple">
<li>MathJax TeX (default)</li>
<li>STIX General</li>
<li>Asana Math</li>
<li>Neo Euler</li>
<li>Gyre Pagella</li>
<li>Gyre Termes</li>
<li>Latin Modern</li>
</ul>
<p>MathJax contains customized webfont versions of these fonts. In particular,
these customized versions are split over several files to minimize the page
load.</p>
<p>Since browsers do not provide APIs to access font metrics, MathJax has
to ship with the necessary font data; this font data is
generated during development and cannot be generated on the fly. In addition,
most fonts do not cover the relevant characters for mathematical layout. Finally, some
fonts (e.g. Cambria Math) store important glyphs outside the Unicode range, making them
inaccessible to JavaScript. These are the main reasons why MathJax
is unable to support arbitrary fonts at this time.</p>
<div class="section" id="font-configuration">
<h2>Font configuration<a class="headerlink" href="#font-configuration" title="Permalink to this headline">¶</a></h2>
<p>Page authors can configure their font preference for each
<a class="reference internal" href="output.html#output-formats"><span class="std std-ref">output format</span></a> separately, see <a class="reference internal" href="options/output-processors/HTML-CSS.html#configure-html-css"><span class="std std-ref">HTML-CSS output
processor</span></a> and <a class="reference internal" href="options/output-processors/SVG.html#configure-svg"><span class="std std-ref">SVG output processor</span></a>. MathJax will download the necessary webfonts and fontdata
dynamically
and only those files necessary for the content.</p>
<p>For the HTML-CSS
output, MathJax will download webfonts in the appropriate webfont
format (depending on the client browser); for the SVG output, MathJax will
download path data that corresponds to the fonts.</p>
<p>The <a class="reference internal" href="options/output-processors/HTML-CSS.html#configure-html-css"><span class="std std-ref">HTML-CSS output processor</span></a> will prefer
locally installed copies of the webfonts to minimize page load. Page authors
can set a preference via the <code class="docutils literal"><span class="pre">availableFonts</span></code> and
<code class="docutils literal"><span class="pre">preferredFont</span></code> options and they can configure the webfont via the
<code class="docutils literal"><span class="pre">webFont</span></code> option. Please note that except for STIX General, the usual
distributions of the supported fonts do not work for technical reasons. You can
download the webfonts from the <a class="reference external" href="https://github.com/mathjax/MathJax/tree/master/fonts/HTML-CSS">MathJax repository</a>.</p>
<p>The <a class="reference internal" href="options/output-processors/SVG.html#configure-svg"><span class="std std-ref">SVG output processor</span></a> will not use fonts directly but
derived SVG path data to draw paths corresponding to characters. The page author
can configure the font via the <code class="docutils literal"><span class="pre">font</span></code> option.</p>
<p>There is currently no method for switching fonts after MathJax has loaded.
Similarly, page users cannot change the font configuration at this time
except by installing their preferred fonts locally.</p>
</div>
<div class="section" id="character-fallbacks">
<h2>Character fallbacks<a class="headerlink" href="#character-fallbacks" title="Permalink to this headline">¶</a></h2>
<p>No font contains a suitable glyph for every character specified in the
Unicode standard. When MathJax encounters a character the configured font does
not support, it will fall back to other fonts in a variety of ways.</p>
<p>First, MathJax enhances Unicode coverage of its default TeX fonts,
e.g., combining two double integrals <code class="docutils literal"><span class="pre">U+222C</span></code> when a quadrupel integral
<code class="docutils literal"><span class="pre">U+2A0C</span></code> is used. However, this cannot create every character specified
in Unicode. Next, MathJax will run through a fallback chain within the
configured fonts (e.g., upright Greek will be substituted with italic Greek).
Finally, MathJax will ask the browser to provide the glyph from a system
font. Since in that final case, MathJax will not have the necessary data on the
glyph’s bounding box, MathJax will guess these metrics; this can negatively
affect layout.</p>
</div>
<div class="section" id="adding-new-fonts">
<h2>Adding new fonts<a class="headerlink" href="#adding-new-fonts" title="Permalink to this headline">¶</a></h2>
<p>As mentioned, MathJax needs pre-generated font data to support a fonts.
This font data can be generated using the <a class="reference external" href="https://github.com/mathjax/MathJax-dev">MathJax development tools</a>.</p>
</div>
<div class="section" id="font-mixing">
<h2>Font mixing<a class="headerlink" href="#font-mixing" title="Permalink to this headline">¶</a></h2>
<p>Mixing multiple fonts is currently not supported. We hope to add
support in the future.</p>
</div>
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