mirror of
https://github.com/Smaug123/KaTeX
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## [0.16.8](https://github.com/KaTeX/KaTeX/compare/v0.16.7...v0.16.8) (2023-06-24) ### Features * expose error length and raw error message on ParseError ([#3820](https://github.com/KaTeX/KaTeX/issues/3820)) ([710774a](710774aaeb))
119 lines
5.9 KiB
Markdown
119 lines
5.9 KiB
Markdown
---
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id: browser
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title: Browser
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---
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> KaTeX supports all major browsers, including Chrome, Safari, Firefox, Opera, Edge, and IE 11.
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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@0.16.8/dist/katex.min.css" integrity="sha384-GvrOXuhMATgEsSwCs4smul74iXGOixntILdUW9XmUC6+HX0sLNAK3q71HotJqlAn" 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@0.16.8/dist/katex.min.js" integrity="sha384-cpW21h6RZv/phavutF+AuVYrr+dA8xD9zs6FwLpaCct6O9ctzYFfFr4dgmgccOTx" 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@0.16.8/dist/contrib/auto-render.min.js" integrity="sha384-+VBxd3r6XgURycqtZ117nYw44OOcIax56Z4dCRWbxyPt0Koah1uHoK0o4+/RRE05" 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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## Loading as Global
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If you include the `katex.js` directly, the `katex` object will be available as
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a global variable.
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```html
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.css" integrity="sha384-pRsDYiLLocCzWnUN/YEr9TBTTaZOUi5x8adKfqi6Qt44lDaFkoP++x1j2ohSMtdf" crossorigin="anonymous">
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<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.js" integrity="sha384-tMzugJpfLv7v0f+KXzNMqNCC6sVzLMM3sCnZDgzy0lcO/0h3sAkEBg/URFcV0JpE" crossorigin="anonymous"></script>
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```
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KaTeX also provides minified versions:
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```html
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.css" integrity="sha384-GvrOXuhMATgEsSwCs4smul74iXGOixntILdUW9XmUC6+HX0sLNAK3q71HotJqlAn" crossorigin="anonymous">
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<script defer src="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.min.js" integrity="sha384-cpW21h6RZv/phavutF+AuVYrr+dA8xD9zs6FwLpaCct6O9ctzYFfFr4dgmgccOTx" crossorigin="anonymous"></script>
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```
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The examples above load the script [deferred using the `defer` attribute](https://developer.mozilla.org/en/HTML/Element/script#Attributes)
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to speed up page rendering. The `katex` object will be available after
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[`DOMContentLoaded` event is fired on the `document`](https://developer.mozilla.org/ko/docs/Web/Reference/Events/DOMContentLoaded).
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If you do not use `defer`, `katex` object will be available after the corresponding
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`script` tag.
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If KaTeX is not used immediately or not critical, it is possible to load KaTeX
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asynchronously. Add [`async` attribute](https://developer.mozilla.org/en/HTML/Element/script#Attributes)
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to `script` and use [`rel="preload"` and `onload` attribute](https://github.com/filamentgroup/loadCSS)
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on `link`.
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You can prefetch KaTeX fonts to prevent FOUT or FOIT. Use [Font Loading API](https://developer.mozilla.org/en-US/docs/Web/API/CSS_Font_Loading_API)
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or [Web Font Loader](https://github.com/typekit/webfontloader):
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```html
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<script>
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window.WebFontConfig = {
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custom: {
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families: ['KaTeX_AMS', 'KaTeX_Caligraphic:n4,n7', 'KaTeX_Fraktur:n4,n7',
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'KaTeX_Main:n4,n7,i4,i7', 'KaTeX_Math:i4,i7', 'KaTeX_Script',
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'KaTeX_SansSerif:n4,n7,i4', 'KaTeX_Size1', 'KaTeX_Size2', 'KaTeX_Size3',
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'KaTeX_Size4', 'KaTeX_Typewriter'],
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},
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};
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</script>
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<script defer src="https://cdn.jsdelivr.net/npm/webfontloader@1.6.28/webfontloader.js" integrity="sha256-4O4pS1SH31ZqrSO2A/2QJTVjTPqVe+jnYgOWUVr7EEc=" crossorigin="anonymous"></script>
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```
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You can also use [`rel="preload"`](https://developer.mozilla.org/en-US/docs/Web/HTML/Preloading_content).
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Add `<link rel="preload" href=(path to WOFF2 font) as="font" type="font/woff2" crossorigin="anonymous">`
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to `head`. Note that [only few browsers support it](https://caniuse.com/#feat=link-rel-preload)
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and they all support WOFF2 so preloading WOFF2 fonts is enough.
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See [Google Web Fundamentals - Web Font Optimization](https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/webfont-optimization)
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for more detail.
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## Module Loaders
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### AMD
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```html
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<script type="text/javascript">
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require([
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"https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.js",
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], katex => {
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...
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});
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</script>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.css" integrity="sha384-pRsDYiLLocCzWnUN/YEr9TBTTaZOUi5x8adKfqi6Qt44lDaFkoP++x1j2ohSMtdf" crossorigin="anonymous">
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```
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### ECMAScript module
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```html
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<script type="module" type="text/javascript">
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import katex from 'https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.mjs';
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...
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</script>
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<script nomodule defer src="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.js" integrity="sha384-tMzugJpfLv7v0f+KXzNMqNCC6sVzLMM3sCnZDgzy0lcO/0h3sAkEBg/URFcV0JpE" crossorigin="anonymous"></script>
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<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.16.8/dist/katex.css" integrity="sha384-pRsDYiLLocCzWnUN/YEr9TBTTaZOUi5x8adKfqi6Qt44lDaFkoP++x1j2ohSMtdf" crossorigin="anonymous">
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```
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> Use [`nomodule` attribute](https://developer.mozilla.org/en/HTML/Element/script#Attributes)
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to provide a fallback for older browsers that do not support ES modules.
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## Download & Host Things Yourself
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Download a [KaTeX release](https://github.com/KaTeX/KaTeX/releases),
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copy `katex.js`, `katex.css`
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(or `katex.min.js` and `katex.min.css` to use minified versions),
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and the `fonts` directory, and include or import it like above.
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You can also build from source. See [Building from Source](node.md#building-from-source)
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for more details.
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## Bundler
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[Use Node.js package managers to install KaTeX and import it](node.md) in your
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project. Then bundle using bundlers like [webpack](https://webpack.js.org/) or
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[rollup.js](https://rollupjs.org/). Note that you have to bundle the stylesheet
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(`katex.css`) or include it manually.
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