KaTeX – The fastest math typesetting library for the web

Simple API, no dependencies – yet super fast on all major browsers.

• Fast: KaTeX renders its math synchronously and doesn’t need to reflow the page.
• Print quality: KaTeX’s layout is based on Donald Knuth’s TeX, the gold standard for math typesetting.
• Self contained: KaTeX has no dependencies and can easily be bundled with your website resources.
• Server side rendering: KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML. $\frac{1}{(\sqrt{\varphi \sqrt{5}}-\varphi )e^{\frac{2}{5}\pi }}=1+\frac{e^{-2\pi }}{1+\frac{e^{-4\pi }}{1+\frac{e^{-6\pi }}{1+\frac{e^{-8\pi }}{1+\cdots }}}}$ ${\left(\sum _{k=1}^n{a}_k{b}_k\right)}^2\le \left(\sum _{k=1}^n{a}_k^2\right)\left(\sum _{k=1}^n{b}_k^2\right)$ $1+\frac{q^2}{(1-q)}+\frac{q^6}{(1-q)(1-q^2)}+\cdots =\prod _{j=0}^{\infty }\frac{1}{(1-q^{5j+2})(1-q^{5j+3})},\text{for }|q|<1.$ Lightning-fast, even on pages with hundreds of expressions: Installation Documentation View on GitHub