120 lines
7 KiB
Markdown
120 lines
7 KiB
Markdown
# [<img src="https://katex.org/img/katex-logo-black.svg" width="130" alt="KaTeX">](https://katex.org/)
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[](https://www.npmjs.com/package/katex)
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[](https://github.com/semantic-release/semantic-release)
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[](https://github.com/KaTeX/KaTeX/actions?query=workflow%3ACI)
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[](https://codecov.io/gh/KaTeX/KaTeX)
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[](https://github.com/KaTeX/KaTeX/discussions)
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[](https://www.jsdelivr.com/package/npm/katex)
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[](https://gitpod.io/#https://github.com/KaTeX/KaTeX)
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[](https://opencollective.com/katex)
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KaTeX is a fast, easy-to-use JavaScript library for TeX math rendering on the web.
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* **Fast:** KaTeX renders its math synchronously and doesn't need to reflow the page. See how it compares to a competitor in [this speed test](http://www.intmath.com/cg5/katex-mathjax-comparison.php).
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* **Print quality:** KaTeX's layout is based on Donald Knuth's TeX, the gold standard for math typesetting.
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* **Self contained:** KaTeX has no dependencies and can easily be bundled with your website resources.
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* **Server side rendering:** KaTeX produces the same output regardless of browser or environment, so you can pre-render expressions using Node.js and send them as plain HTML.
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KaTeX is compatible with all major browsers, including Chrome, Safari, Firefox, Opera, Edge, and IE 11.
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KaTeX supports much (but not all) of LaTeX and many LaTeX packages. See the [list of supported functions](https://katex.org/docs/supported.html).
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Try out KaTeX [on the demo page](https://katex.org/#demo)!
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## Getting started
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### Starter template
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```html
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<!DOCTYPE html>
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<!-- KaTeX requires the use of the HTML5 doctype. Without it, KaTeX may not render properly -->
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<html>
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<head>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.15.2/dist/katex.min.css" integrity="sha384-MlJdn/WNKDGXveldHDdyRP1R4CTHr3FeuDNfhsLPYrq2t0UBkUdK2jyTnXPEK1NQ" crossorigin="anonymous">
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<!-- The loading of KaTeX is deferred to speed up page rendering -->
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<script defer src="https://cdn.jsdelivr.net/npm/katex@0.15.2/dist/katex.min.js" integrity="sha384-VQ8d8WVFw0yHhCk5E8I86oOhv48xLpnDZx5T9GogA/Y84DcCKWXDmSDfn13bzFZY" crossorigin="anonymous"></script>
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<!-- To automatically render math in text elements, include the auto-render extension: -->
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<script defer src="https://cdn.jsdelivr.net/npm/katex@0.15.2/dist/contrib/auto-render.min.js" integrity="sha384-+XBljXPPiv+OzfbB3cVmLHf4hdUFHlWNZN5spNQ7rmHTXpd7WvJum6fIACpNNfIR" crossorigin="anonymous"
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onload="renderMathInElement(document.body);"></script>
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</head>
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...
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</html>
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```
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You can also [download KaTeX](https://github.com/KaTeX/KaTeX/releases) and host it yourself.
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For details on how to configure auto-render extension, refer to [the documentation](https://katex.org/docs/autorender.html).
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### API
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Call `katex.render` to render a TeX expression directly into a DOM element.
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For example:
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```js
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katex.render("c = \\pm\\sqrt{a^2 + b^2}", element, {
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throwOnError: false
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});
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```
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Call `katex.renderToString` to generate an HTML string of the rendered math,
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e.g., for server-side rendering. For example:
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```js
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var html = katex.renderToString("c = \\pm\\sqrt{a^2 + b^2}", {
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throwOnError: false
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});
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// '<span class="katex">...</span>'
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```
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Make sure to include the CSS and font files in both cases.
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If you are doing all rendering on the server, there is no need to include the
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JavaScript on the client.
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The examples above use the `throwOnError: false` option, which renders invalid
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inputs as the TeX source code in red (by default), with the error message as
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hover text. For other available options, see the
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[API documentation](https://katex.org/docs/api.html),
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[options documentation](https://katex.org/docs/options.html), and
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[handling errors documentation](https://katex.org/docs/error.html).
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## Demo and Documentation
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Learn more about using KaTeX [on the website](https://katex.org)!
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## Contributors
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### Code Contributors
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This project exists thanks to all the people who contribute code. If you'd like to help, see [our guide to contributing code](CONTRIBUTING.md).
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<a href="https://github.com/KaTeX/KaTeX/graphs/contributors"><img src="https://contributors-svg.opencollective.com/katex/contributors.svg?width=890&button=false" alt="Code contributors" /></a>
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### Financial Contributors
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Become a financial contributor and help us sustain our community.
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#### Individuals
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<a href="https://opencollective.com/katex"><img src="https://opencollective.com/katex/individuals.svg?width=890" alt="Contribute on Open Collective"></a>
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#### Organizations
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Support this project with your organization. Your logo will show up here with a link to your website.
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<a href="https://opencollective.com/katex/organization/0/website"><img src="https://opencollective.com/katex/organization/0/avatar.svg" alt="Organization 1"></a>
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<a href="https://opencollective.com/katex/organization/1/website"><img src="https://opencollective.com/katex/organization/1/avatar.svg" alt="Organization 2"></a>
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<a href="https://opencollective.com/katex/organization/2/website"><img src="https://opencollective.com/katex/organization/2/avatar.svg" alt="Organization 3"></a>
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<a href="https://opencollective.com/katex/organization/3/website"><img src="https://opencollective.com/katex/organization/3/avatar.svg" alt="Organization 4"></a>
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<a href="https://opencollective.com/katex/organization/4/website"><img src="https://opencollective.com/katex/organization/4/avatar.svg" alt="Organization 5"></a>
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<a href="https://opencollective.com/katex/organization/5/website"><img src="https://opencollective.com/katex/organization/5/avatar.svg" alt="Organization 6"></a>
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<a href="https://opencollective.com/katex/organization/6/website"><img src="https://opencollective.com/katex/organization/6/avatar.svg" alt="Organization 7"></a>
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<a href="https://opencollective.com/katex/organization/7/website"><img src="https://opencollective.com/katex/organization/7/avatar.svg" alt="Organization 8"></a>
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<a href="https://opencollective.com/katex/organization/8/website"><img src="https://opencollective.com/katex/organization/8/avatar.svg" alt="Organization 9"></a>
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<a href="https://opencollective.com/katex/organization/9/website"><img src="https://opencollective.com/katex/organization/9/avatar.svg" alt="Organization 10"></a>
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## License
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KaTeX is licensed under the [MIT License](http://opensource.org/licenses/MIT).
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