Hyades

LaTeX math as pure Unicode text. For terminals, code comments, emails, and everywhere rich formatting isn't a thing.

_{Every equation above is pure text -- you can select it and copy-paste it anywhere. The source is standard LaTeX.}

What Is This?

Hyades takes standard LaTeX math like this:

$$
  f(x) = \overbrace{\sum_{k=0}^{n} \frac{f^{(k)}(a)}{k!}
           (x-a)^k}^{\mathit{Taylor polynomial}}
       + \underbrace{R_n(x)}_{\mathit{Remainder}}
$$

and renders it as multi-line Unicode text:

             𝑇𝑎𝑦𝑙𝑜𝑟 𝑝𝑜𝑙𝑦𝑛𝑜𝑚𝑖𝑎𝑙
         ╭───────────┴───────────╮
           𝑛      (𝑘)
          ───    𝑓   (𝑎)         𝑘
  𝑓(𝑥) =  ╲     ───────── (𝑥 − 𝑎)  +   𝑅 (𝑥)
          ╱⎽⎽      𝑘!                   𝑛
         𝑘 = 0                       ╰───┬───╯
                                     𝑅𝑒𝑚𝑎𝑖𝑛𝑑𝑒𝑟

or plain ASCII if you ask it to:

           n      (k)
          ---    f   (a)         k
  f(x) =  \     --------- (x - a)  + R (x)
          /__      k!                 n
         k = 0

It's a native CLI binary written in pure C. As such it is extremely fast and doesn't require any additional dependencies. Linux, MacOS, and Windows, and Web (WASM) are all supported out of the box.

Try it in your browser → -- interactive WASM playground with tutorials and a full syntax reference. No installation required.

Features

Math -- 95% LaTeX compatible

Fractions, roots, integrals, summations, products, limits, matrices, piecewise functions, aligned equations, Greek letters, auto-scaling delimiters, overbrace/underbrace, accents, primes, binomial coefficients, extensible arrows, equation tags, you name it... Paste your existing LaTeX and it just renders.