Most tools that claim to write math flatten it into a single line. Here the LaTeX is parsed and laid out the way you would write it in a notebook: numerator over denominator, a radical bar that stretches, limits attached to a sum. This guide is the checklist we wish every converter published: exactly which commands are drawn, which are left out, and what to type instead.
Nested fractions, radicals with an index, sub- and superscripts, limits on sums and integrals.
Below is what we ran through the real parser on 22 October 2026, command by command.
A command it cannot draw is left out and named in a note above the preview, not hidden.
Every symbol is drawn from the letters of the hand you picked, not pasted from a math font.
| Area | Drawn in handwriting | Left out (named in a note) |
|---|---|---|
| Fractions and roots | \frac, \dfrac, \tfrac, nested fractions, \sqrt, \sqrt[n] | \binom |
| Scripts and limits | x_{i}, x^{2}, nested powers, \sum, \int and \lim with limits, primes | \prod, \oint, \iint |
| Symbols | Greek letters, \pm, \times, \div, \cdot, \approx, \neq, \leq, \geq, \infty, \partial, \nabla, \propto, arrows, \ldots, \cdots | \in, \notin, \subset, \cup, \cap, \forall, \exists, \perp, \parallel, \angle, \triangle |
| Accents and fonts | \dot and \ddot, \text{...} (kept as plain words), \left and \right (brackets at normal size, they do not stretch) | \vec, \bar, \overline, \hat, \mathbb. \mathbf and \mathrm are drawn as ordinary letters |
| Structures | pmatrix, bmatrix and vmatrix up to 15x15 | cases, tabular; align and equation keep their content but not their layout |
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Penmark reads inline math in dollar signs, display math in double dollars or \[ \], and the \( \) form that chat assistants often produce. Each formula becomes a laid-out row: a fraction has its bar stretched to the wider of numerator and denominator, a radical bar covers everything under it, limits on sums, products and integrals are written as small indices beside the symbol, and sub- and superscripts are lowered, raised and reduced. Brackets are drawn at one normal size: they do not stretch to the height of a fraction inside them. Every symbol is written in the letters of the hand you chose, so the whole page looks like one pen wrote it.
A formula inside a sentence is moved onto its own centered line: the prose before it, the formula, then the prose after it. If you want a line of text to stay one line, write the formula on its own line yourself. A plain line such as x^2 + y^2 = r^2 is recognised as a formula without any dollar signs.
We ran a long list of commands through the parser, and the table above is the result. A command it cannot draw is dropped and named in a note, so you see the gap before you print. The most common ones have an easy rewrite.
For align or equation, put one equation per line instead. For cases, write two lines of text, each with its condition in words. For a vector, write the letter and add the arrow by hand after printing, or write the word vector. For a set, replace \in with the word in, and \mathbb{R} with R. A table or a graph is not drawn at all: leave room on the page and sketch it by hand, which most teachers expect anyway.
Two traps are not commands at all. The dollar sign is the math delimiter, so a price cannot be typed with $; write the amount in words. And the escapes \% and \& are not unescaped: type a plain % and write and in words.
From Overleaf or a .tex file you already have the source. From a chat assistant the trap is copying the rendered answer: once the chat has drawn the formula, the backslashes are gone and what you paste is not LaTeX. Ask the assistant to put its whole answer inside one code block, with one equation per line in dollar signs, and copy from the block. The homework page has the exact prompt wording built in.
Matrices written as pmatrix, bmatrix or vmatrix are drawn as a real grid with stretched brackets, up to 15 by 15; a larger one is not drawn and the page says so. A lab report or a full worked solution can be pasted in one go, prose and formulas together, and tuned afterwards: size, stroke weight and spacing for the whole page, or for a single symbol that landed badly. There is a longer walk-through of that case in the handwritten lab report guide, and the broader math page is handwritten math.
Yes. Paste the formulas as they are, each on its own line in $...$, $$...$$ or \[...\]. Environments such as align are left out, so split them into one equation per line first.
\vec, \bar, \overline, \hat, \mathbb, \binom, \in and other set symbols, \forall and \exists, \perp and \angle, \oint and \iint, \pmod, cases and tabular. They are left out and named in a note above the preview.
No. It is moved to its own centered line, with the prose before and after it on lines of their own. For a one-line result, write the formula on its own line.
Yes, in two dimensions: the bar stretches to the wider part, and nested fractions work. Roots carry their index and the radical bar covers the whole expression.
Up to 15x15 for pmatrix, bmatrix and vmatrix. A larger matrix is not drawn and the page notes it.
Yes, after you fill the template once (about 10-20 minutes in total); until then a ready-made hand writes it. A photo of ordinary handwriting does not work.
A dollar sign is the math delimiter and cannot be drawn, so write the amount in words. Type a plain % rather than \%.
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