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Equation Editor for the webBeta - 5.9.7.7
The mathematics layer for the web. The world's most popular equation editor, and the fastest maths rendering. Write it once, and get accessible MathML, SVG or PNG's, and C++ code.
FxEDITOR
Type maths straight into the equation, or write LaTeX markup above it - the two stay in step.
Use <Alt+#> to open toolbar panels, <Tab> to move to the next empty box and then word by word, and <Ctrl+arrow keys> to step through the structure.
Use <Alt+#> to open toolbar panels, <Tab> to move to the next empty box and then word by word, and <Ctrl+arrow keys> to step through the structure.
Every equation accessible, by default
Every equation carries generated spoken text, whether it is MathML or SVG. Below is what a screen reader should say for each — generated live by the same converter the editor ships, so what you read here is what your users hear.
Press Tab to step through the equations with a screen reader running. Full test bench, with all four markup strategies compared →
Store the LaTeX, not the MathML FxTEX
The editor already gives you MathML, so strictly you do not need fxTeX at all. Save what the editor hands you and the job is done.
The catch is what you have saved.
\frac{-b\pm\sqrt{b^2-4ac}}{2a} is thirty characters. The MathML for it is 277, across 25 nested elements — and that is what then lives in your database, your page source, and every diff anyone reads for the rest of the site's life. Nobody edits that by hand.
So keep the LaTeX, which stays short, readable and editable, and let fxTeX produce the MathML in the reader's browser instead. The reader gets exactly the same markup; and you keep your source clean.
Two things come with that. Every equation it converts can be wired to straight to fxGraph, and a legacy site full of old equations converts on its next page load — no migration, nothing rewritten.
Add to your page:
<script src="https://fxtex.codecogs.com/fxtex.min.js"></script>
<script>fxTeX.autoRender();</script>33 kB over the wire — Read the documentation
Your HTML
<p>The quadratic formula solves $ax^2+bx+c=0$
for $x$, giving
$$x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$$</p>On the page
The quadratic formula solves $ax^2+bx+c=0$ for $x$, giving $$x = \frac{-b \pm \sqrt{b^2-4ac}}{2a}$$
Converted in your browser just now, by the two lines on the left. The LaTeX stayed in your HTML - nothing was rewritten, and nothing was fetched.
Or just ask for a picture FxTEX Server
Simple is sometimes best. Three equations on a page do not need a
script loading and walking through your HTML to find them — point an <img>
at the equation and the equation arrives. There is nothing to install: no maths font, no library,
no build step — perfect for blogs, forums and wikis, where adding JavaScript to the page is often impossible.
Running since 2005, now serving 150,000+ websites and apps.
Your pages stay clean as well, in the database and in the source — one <img>
tag per equation, however long the equation is. And if you change your mind: add fxTeX later and it finds those same
tags and converts them in place, so your pages adopt MathML with spoken text without being rewritten.
If you prefer to mark out maths LaTeX-style, with $…$ or
\[…\], latexit.js
turns them into equations.
And it's lightning fast — Read more →
Add to your page:
<img src="https://fxtex.codecogs.com/svg.image?1+\sin^2(x)"
alt="1+\sin^2(x)">On the page
One request, one image. Nothing ran on the page to put it there.
Formats:
svga vector image, sharp at any sizepdfa vector image in portable document formatpnga bitmap, for anywhere that will not take SVG'sgifthe same again, just an older formatmathmlthe mathematical markup language itself
Your editor, any way you like it.
As many rows as you like
Ten panels across three rows — more variety without scrolling sideways.
Lock it down
Let students complete elements of an equation without changing the structure. Fill in the boxes below — nothing else can be edited.
From LaTeX to Computational Math—Automatically
You write the LaTeX. We generate the code that runs it, and the calculator that runs the code.
1
What you write
R_{cdf} = 1 - \exp\left[
-\left(\frac{D}{D_m}\right)^n
\right]Plain LaTeX, in your page or your database — and what it means, for everyone who does not read LaTeX.
2
What we generate FxCODE
double Rosin_CDF(double Dm, int n, double D)
{
return 1-exp(-pow(D/Dm,n));
}fxCode turns a LaTeX equation into a working C++ function. It handles algebra, roots and powers, trigonometric and logarithmic functions, sums and products, limits, derivatives, partial derivatives and integrals — plus whole systems of equations, which it sorts into the right evaluation order. Each part is solved exactly where the mathematics allows, and approximated numerically where it doesn't.
3
What it does FxGRAPH
Plotted live by that function, wired into the CodeCogs code library and its Interactive Calculators.
Seven products, one pipeline
One equation, however you need it delivered.
fxEditor
A bi-directional LaTeX and WYSIWYG editor and API. Contextual auto-suggest. Also a Microsoft Word, PowerPoint and Excel addin.
fxRender
Document Excel calculations with beautiful equations that present your formulae clearly and concisely.
fxTeX New
Converts the LaTeX already in your HTML to MathML, in place. 43 kB, accessible by default, and a right-click menu to copy any equation or open it as a graph.
fxTeX Server New
Formerly LaTeXRender. Equations as SVG, PNG, GIF, PDF or MathML from a single URL. Free for light use.
fxCode New
Turn LaTeX into runnable C++, alongside the code library and Interactive Calculators.
fxGraph New
Interactive calculators and live plots from two lines of HTML. Compiled to WebAssembly, so it runs locally in realtime with no server behind it.
How we compare
Two comparisons — the editor against the tools people otherwise reach for, and the rendering engine against the other browser engines. Including the two things we do not do yet.
Fast, and right
Speed is the easy half. An engine that renders quickly but quietly mangles a construct nobody tested is worse than a slow one.
So we have run it against 95,811,247 equations. Not a sample chosen to flatter it — everything we could find, including a great many nobody would write on purpose.
Every build is then checked against a corpus of 20,000 drawn from those, picked to span the range of forms and characters people actually write and deliberately including mis-formed ones.
Ready for developers
Three things you are likely to want, and what each one costs you in code.
Show equations already on your page
Point it at a page that has LaTeX in it. It finds every $…$ and
converts it to real MathML, in the reader's browser.
<script src="https://fxtex.codecogs.com/fxtex.min.js"></script>
<script>fxTeX.autoRender();</script>43 kB. No build step, and no request per equation.
Let people write them
Five objects — toolbar, markup pane, maths view, output and history — each addressable on its own. Wire up the ones you want and leave out the rest.
const eq = EqEditor.TextArea.link('latexInput');
EqEditor.Toolbar.link('toolbar').addTextArea(eq);
EqEditor.MathView.link('mathview').addTextArea(eq);That is a complete editor. Everything else is optional.
Get the equation back out
One call, nine formats — including MathML with the spoken text a screen reader needs.
output.exportAs('mathmlspeech');
// mathml · latex · url · html
// wp · phpBB · tw · doxygenOr hand it to a plugin and never call the API at all.
Free to use for non-commercial work — the API and the plugins. Building something bigger to sell needs a commercial licence, which carries no territorial or volume restriction. Equations you generate can be used for any purpose, anywhere: the licence covers the tools, not their output. Our editor runs entirely offline, converting to MathML within your browser, so your equations stay private.
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