What is the table editor?

The Sarmate.net table editor is a visual WYSIWYG online editor that lets you create sign and variation tables directly with your mouse — no prior LaTeX knowledge required. Draw your table as you would on paper: choose signs, place arrows, enter values. The corresponding LaTeX code (tkz-tab) is generated in real time, ready to be used in your documents.

Who is this tool for?

Whether you're a math teacher preparing course materials, a student writing an assignment, or a professor designing an exam, the table editor saves you valuable time. The tkz-tab syntax is powerful but complex: remembering the placement of double bars, arrow directions and value positioning takes practice. With the visual editor, you no longer need to worry about it.

How does it work?

The editor displays an interactive preview of your table. Every element is clickable: intervals for setting signs, bars for adding markers (zero, single bar, double bar), values for editing, and arrows for changing direction. The rendering matches the compiled PDF — it's a true WYSIWYG editor (What You See Is What You Get). In the right panel, the LaTeX code updates live. One click is all it takes to copy it or test it directly in the integrated online compiler.

What tables can I create?

Sign tables — with as many rows as needed (e.g. multiple factors of a product or quotient)
Variation tables — with arrows for increasing, decreasing and constant variations
Combined tables — sign of f'(x) on top, variations of f(x) below, just like in an exam paper
Tables with asymptotes — double bars at forbidden values, with correct placement of limits (−∞, +∞)
Tables on bounded intervals — the ±∞ bounds can be changed to any value (e.g. [0, 1])

The generated code uses the tkz-tab package, available on all LaTeX distributions (TeX Live, MiKTeX) and on Sarmate.net. The result is a professional, publication-quality table.

Step-by-step guide

In a few steps, create a complete sign and variation table:

1

Add columns

Click + Column to add notable values of x (roots, poles…). The ±∞ bounds are already present and can be edited.

2

Add rows

Use + Sign row and + Variation row. Click the row label to rename it (e.g. f'(x), f(x)).

3

Fill in signs and variations

Sign row: click on intervals to choose +/−, and on bars to add markers (0, single/double bar). Variation row: click on values to edit them, and on arrows to change direction.

4

Copy or test the code

The LaTeX code is generated in real time in the right panel. Click Copy to paste it into your document, or Test to compile it directly in the online editor.

Features

Sign rows

Click intervals to choose + or −
Markers on bars: 0 (zero), | (single bar), || (double bar / asymptote)
Double bars automatically propagate to all rows in the same column

Variation rows

Click a value to edit its LaTeX formula, position (high/low) and double bar
Click arrows to change direction: increasing, decreasing or constant

Table management

Add, move or delete columns and rows
The ±∞ bounds can be changed to any value (e.g. 0, 1 for a function on [0,1])
Full undo / redo history
Built-in templates: signs, quotient, variation, combined

tkz-tab quick reference

Reference of symbols used in the code generated by the editor:

Sign row (\tkzTabLine)

Symbol	Meaning
`+`	Positive sign on the interval
`-`	Negative sign on the interval
`z`	Zero (root)
`t`	Simple vertical bar
`d`	Double bar (asymptote, forbidden value)

Variation row (\tkzTabVar)

Symbol	Meaning
`+/{val}`	Value at top (local maximum)
`-/{val}`	Value at bottom (local minimum)
`+D/{val}/`	Double bar, value top-left
`-D/{val}/`	Double bar, value bottom-left
`D+/ /{val}`	Double bar, value top-right (left boundary)
`D-/ /{val}`	Double bar, value bottom-right (left boundary)
`-D+/{g}/{d}`	Double bar with two values (interior)

Other visual editors

Discover our other free WYSIWYG editors for LaTeX:

Colored boxes Visual tcolorbox editor Probability trees Visual TikZ editor TikZ & PSTricks figures WYSIWYG graphics editor LaTeX tables Visual tabular editor

See all editors: Visual LaTeX editors | Overleaf alternative

Ready to create your tables?

No download, no installation. Open the editor and start right away.

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Create sign and variation tables — without writing a single line of code