KaTeX – The fastest math typesetting library for the web

Type an expression:

f(x) = \int_{-\infty}^\infty<br /><br /> \hat f(\xi)\,e^{2 \pi i \xi x}<br /><br /> \,d\xi

See how it renders with $KATEX$:

f(x)=∫−∞∞f^(ξ)e2πiξxdξf(x) = \int_{-\infty}^\infty \hat f(\xi)\,e^{2 \pi i \xi x} \,d\xif(x)=∫​−∞​∞​​​f​^​​(ξ)e​2πiξx​​dξ

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