Question 1

What is KaTeX and how does it work?

Accepted Answer

KaTeX is a fast, open-source JavaScript library that renders LaTeX math notation in the browser. It converts LaTeX strings into HTML and CSS without requiring a server or a TeX installation. It supports a large subset of LaTeX math commands.

Question 2

What is the difference between inline and display mode?

Accepted Answer

Inline mode renders the equation as part of flowing text, scaling it to match the surrounding font size. Display mode renders the equation on its own line, centred and larger, which is the standard presentation for standalone mathematical expressions.

Question 3

Which LaTeX commands are supported?

Accepted Answer

KaTeX supports most common math commands: fractions (\frac), square roots (\sqrt), Greek letters (\alpha, \beta…), integrals (\int), sums (\sum), matrices (\begin{matrix}), and much more. Unsupported commands produce an error message below the preview.

Question 4

How do I copy the rendered equation?

Accepted Answer

Click the Copy LaTeX button to copy the source LaTeX string to your clipboard. You can then paste it into any LaTeX document, Markdown file that supports math, or a chat app that renders KaTeX.

Question 5

Is the rendered output safe to embed in HTML?

Accepted Answer

Yes. KaTeX generates a sanitised HTML string that contains no user-supplied tags or script elements. The dangerouslySetInnerHTML prop is used only to inject the KaTeX-generated markup, which is safe by design.

LaTeX Equation Renderer

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