LaTeX assistant

Build your tables, figures and formulas with forms and a live preview, then copy the LaTeX code. Free, no sign-up: everything stays in your browser.

Your work is saved automatically in this browser.

How to use it

Each tab produces a piece of code to paste into your document. The “Preamble” line lists the \usepackage lines to add (once, before \begin{document}).
Copy full document gives a file ready to compile (pdfLaTeX, XeLaTeX or LuaLaTeX); Open in Overleaf compiles it online without installing anything (the document is then sent to Overleaf).
Previews are drawn by the tool: they show the general look, but only the compiled PDF is authoritative.
Each tab's work is kept in this browser; Save project creates a .json file to continue elsewhere.

Frequently asked questions

Why don't my table colours show?

Load \usepackage[table]{xcolor} (with the table option) and the \definecolor lines shown under the code. If another package already loads xcolor, put this line before it or use \PassOptionsToPackage{table}{xcolor}.

The variation table does not compile

Check that \usepackage{tkz-tab} is present (it loads TikZ) and that every value is valid math-mode LaTeX. The package ships with TeX Live, MiKTeX and Overleaf.

How do I type a function in the TikZ module?

As on a calculator: x^2-3*x+1, 2x+1, exp(-x), ln(x), sqrt(x), sin(x) (radians), abs(x), pi. The tool translates it for TikZ (TikZ trigonometric functions work in degrees).

What each tab produces

Tables: an editable grid, merged cells, row colours, number alignment; clean tabular code with the rules and colours you chose.
Variation and sign tables: tkz-tab tables (common in French maths teaching) without learning its syntax.
TikZ graphs: function curves, axes, grids and points, from expressions typed as on a calculator.
Probability trees: branches and probabilities entered in a form, the tree drawn in TikZ.
Matrices and systems: matrices of any size, determinants, aligned systems of equations.
Formulas: common symbols and structures (fractions, sums, integrals, limits) with a preview.
Preamble: the list of \usepackage lines needed for everything you created.

An end-to-end example

For a calculus exercise: build the variation table of f(x) = x² − 4x + 3 (decreasing to 2, minimum −1, then increasing), plot the curve in the TikZ tab on [−1, 5], then click “Copy a full document”. You get a file that compiles as is with pdfLaTeX, XeLaTeX or LuaLaTeX, or that you open in Overleaf to compile online.

LaTeX good practice

One preamble: each \usepackage goes once, before \begin{document}. Loading a package twice with different options causes an “option clash” error.
Readable tables: few vertical rules, thin horizontal rules at the top, under the header and at the bottom (booktabs style).
Units and numbers: the siunitx package (\qty{9.81}{m/s^2}) handles spacing, decimal marks and units.
Floats: put tables and graphs in table or figure with a \caption and a \label so you can cite them with \ref.

If it doesn't compile

“Undefined control sequence”: a package is missing. Copy the suggested preamble line.
“Missing $ inserted”: a formula is written outside math mode (a ^ or _ in text).
Broken accents: with pdfLaTeX keep \usepackage[utf8]{inputenc} and \usepackage[T1]{fontenc}; with XeLaTeX or LuaLaTeX they are unnecessary.

To turn a TikZ figure into an image for use elsewhere, try TikZ to SVG.

Guide written and checked by Erwan Hautot · updated 30 October 2026.