Astro v7 ships Sätteri as the default Markdown processor, and its math feature renders LaTeX expressions via KaTeX — no plugins needed.

Inline math

Wrap expressions in single dollar signs: $E=m{c}^2$, $a^2+b^2=c^2$, $\pi \approx 3.14159$.

You can mix math with prose naturally. The quadratic formula $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ gives the roots of any quadratic $a{x}^2+bx+c=0$.

Display math

Use double dollar signs for centred block equations.

Euler’s identity:

$e^{i\pi }+1=0$

The Gaussian integral:

${\int }_{-\infty }^{\infty }{e}^{-x^2}dx=\sqrt{\pi }$

Maxwell’s equations in differential form:

$\nabla \cdot \mathbf{E}=\frac{\rho }{{\epsilon }_0}$

$\nabla \times \mathbf{B}={\mu }_0\mathbf{J}+{\mu }_0{\epsilon }_0\frac{\partial \mathbf{E}}{\partial t}$

A worked example

The sum of the first $n$ natural numbers can be derived by writing the sum forwards and backwards:

$S=1+2+\cdots +n$ $S=n+(n-1)+\cdots +1$

Adding both rows gives $2S=n(n+1)$, so:

$S=\frac{n(n+1)}{2}$

Enable the math feature in astro.config.mjs with a one-line change:

processor: satteri({ features: {'math': true} })

That’s all it takes.