math-render

LaTeX math → SVG, entirely in Rust.

let svg: Vec<u8> = math_render::render_svg(r"\frac{\pi}{2}", false, "#000000")?;

color: "#000000"	color: "#e6e6e6"

Pure Rust: no LaTeX install, no system font dependency. Under the hood: mitex converts LaTeX math source to Typst math source, typst/typst-as-lib compiles it, and typst-svg exports the result as a standalone SVG. Fonts come from typst-kit's embedded set, not the host system, so output is reproducible across machines.

Usage

use math_render::render_svg;

// Inline style: $...$ / \(...\)
let inline = render_svg(r"\frac{\pi}{2}", false, "#000000")?;

// Display style: $$...$$ / \[...\] — handles \sqrt, \int with bounds,
// and \text{...} in one formula (continuous-signal RMS):
let display = render_svg(
    r"\text{RMS} = \sqrt{\frac{1}{T} \int_{0}^{T} [x(t)]^2 \, dt}",
    true,
    "#000000",
)?;

color: "#000000"	color: "#e6e6e6"

• tex is the LaTeX math source without surrounding delimiters.
• color is the text color as a hex string (e.g. "#000000") — the page background is always transparent.
• The returned bytes are a standalone SVG document sized to fit the formula exactly (no page padding beyond a small margin).

The images above add a background rectangle on top of that transparent output, so the same formula is legible on both light and dark backgrounds.

Why not MathJax / KaTeX / a LaTeX toolchain?

Those are excellent, but pull in a JS runtime or a full LaTeX installation. This crate's only non-Rust dependency is a small set of vendored Typst spec files (see vendor/mitex/NOTICE.md) that supply mitex's runtime helper functions — everything else is a Rust crate, so cargo build is enough.

Status

Early — the API is a single function. It covers the common LaTeX math subset that mitex supports; anything mitex::convert_math can't translate to Typst will surface as an error rather than silently mis-rendering.

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.

vendor/mitex/ contains files vendored from the mitex project, licensed Apache-2.0 — see vendor/mitex/NOTICE.md for details.