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MathCard Guide

Create beautiful mathematical cards for X.

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What is MathCard?

MathCard turns plain text and mathematical expressions into image cards that are easy to post on X.

Basic Workflow

  1. Write text and formulas.
  2. Select LaTeX code and click Inline or Math.
  3. Click Copy Image.
  4. Click Open X.
  5. Paste the copied image into the X composer and post.

Insertion Buttons

  • Inline — Inserts $...$. Best for mathematical expressions inside normal text.
  • Math — Inserts [math]...[/math]. Best for standalone equations.

Supported Formula Syntax

[math]...[/math]

[math]
x^2+y^2=z^2
[/math]

$$...$$

$$
x^2+y^2=z^2
$$

$...$

Use single dollar signs for inline math:

Euler's identity is $e^{i\pi}+1=0$.

  • Inline inserts inline math, while Math inserts a standalone display equation. Either button can wrap selected LaTeX or insert an empty expression.
  • [math]...[/math] and $$...$$ create block math; $...$ creates inline math.
  • Full Markdown is not supported.

Common LaTeX Syntax

PurposeInput
Powerx^2
Subscripta_n
Fraction\frac{a}{b}
Square root\sqrt{x}
Greek letters\alpha, \beta, \pi
Sum\sum_{k=1}^{n} k
Integral\int_0^1 x^2\,dx
Limit\lim_{x \to 0}

Matrix


\begin{pmatrix}
a & b \\
c & d
\end{pmatrix}

Aligned equations


\begin{aligned}
a+b &= c \\
d+e &= f
\end{aligned}

Rendered Examples

x2+y2=z2x^2+y^2=z^2
ab+x\frac{a}{b} + \sqrt{x}
∑k=1nk\sum_{k=1}^{n} k
(abcd) \begin{pmatrix} a & b \\ c & d \end{pmatrix}
a+b=cd+e=f \begin{aligned} a+b &= c \\ d+e &= f \end{aligned}

Tips

  • Multiple formula blocks are supported.
  • [math]...[/math] and $$...$$ may be used in the same card.
  • Invalid formulas do not crash the application.
  • Very long formulas may need to be shortened to fit the card cleanly.
  • The exported PNG matches the visible CardPreview.
  • Save PNG and Copy Text are optional secondary actions.
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