docs.sheetjs.com/docz/docs/02-getting-started/01-installation/01-standalone.mdx

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import current from '/version.js';
import CodeBlock from '@theme/CodeBlock';

# Standalone Browser Scripts

Each standalone release script is available at https://cdn.sheetjs.com/.

<p>The current version is {current} and can be referenced as follows:</p>

<CodeBlock language="html">{`\
<!-- use version ${current} -->
<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
</CodeBlock>

:::tip pass

[Watch the repo](https://git.sheetjs.com/SheetJS/sheetjs) or subscribe to the
[RSS feed](https://git.sheetjs.com/sheetjs/sheetjs/tags.rss) to be notified when
new versions are released!

:::

:::warning pass

A number of services host older versions of the SheetJS libraries.  Due to
syncing issues, they are generally out of date.

**The SheetJS CDN** https://cdn.sheetjs.com/ **is the authoritative source**
**for SheetJS scripts**

:::

## Browser Scripts

`xlsx.full.min.js` is the complete standalone script.  It includes support for
reading and writing many spreadsheet formats.

<CodeBlock language="html">{`\
<!-- use xlsx.full.min.js from version ${current} -->
<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js"></script>`}
</CodeBlock>


A slimmer build is generated at `dist/xlsx.mini.min.js`. Compared to full build:
- codepage library skipped (no support for XLS encodings)
- no support for XLSB / XLS / Lotus 1-2-3 / SpreadsheetML 2003 / Numbers
- node stream utils removed

<details>
  <summary><b>How to integrate the mini build</b> (click to show)</summary>

Replace references to `xlsx.full.min.js` with `xlsx.mini.min.js`.  Starting from
scratch, a single script tag should be added at the top of the HTML page:

<CodeBlock language="html">{`\
<!-- use xlsx.mini.min.js from version ${current} -->
<script lang="javascript" src="https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.mini.min.js"></script>`}
</CodeBlock>

</details>

### Vendoring

For general stability, "vendoring" scripts is the recommended approach:

<p>1) Download the script (<code parentName="pre">xlsx.full.min.js</code>) for
   the desired version. The current version is available at <a href={`https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js`}>https://cdn.sheetjs.com/xlsx-{current}/package/dist/xlsx.full.min.js</a></p>

2) Move the script to a `public` folder with other scripts.

3) Reference the local script from HTML pages:

```html
<script src="/public/xlsx.full.min.js"></script>
```

This script assigns to `window.XLSX`. The global can be used in other scripts.

### Internet Explorer and Older Browsers

For broad compatibility with JavaScript engines, the library is written using
ECMAScript 3 language dialect.  A "shim" script provides implementations of
functions for older browsers and environments.

Due to SSL compatibility issues, older versions of IE will not be able to
use the CDN scripts directly.  They should be downloaded and saved to a public
directory in the site:

<ul>
<li>Standalone: <a href={`https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.mini.min.js`}>https://cdn.sheetjs.com/xlsx-{current}/package/dist/xlsx.mini.min.js</a></li>
<li>Shim: <a href={`https://cdn.sheetjs.com/xlsx-${current}/package/dist/shim.min.js`}>https://cdn.sheetjs.com/xlsx-{current}/package/dist/shim.min.js</a></li>
</ul>

Add a `script` reference to the shim before the standalone script:

```html
<!-- add the shim first -->
<script type="text/javascript" src="shim.min.js"></script>
<!-- after the shim is referenced, add the library -->
<script type="text/javascript" src="xlsx.full.min.js"></script>
```

### Web Workers

The standalone scripts can be loaded using `importScripts` at the top of the
worker scripts:

<CodeBlock language="js">{`\
importScripts("https://cdn.sheetjs.com/xlsx-${current}/package/dist/shim.min.js");
importScripts("https://cdn.sheetjs.com/xlsx-${current}/package/dist/xlsx.full.min.js");`}
</CodeBlock>


## ECMAScript Module Imports

:::caution pass

This section refers to imports using `script type="module"`.  For imports in
modern projects using Webpack or React or Angular or VueJS, the installation is
described [in "Frameworks and Bundlers"](/docs/getting-started/installation/frameworks).

:::

The ECMAScript Module build is saved to `xlsx.mjs` and can be directly added to
a page with a `script` tag using `type="module"`:

<CodeBlock language="html">{`\
<script type="module">
import { read, writeFileXLSX } from "https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs";
</script>`}
</CodeBlock>

If Encoding support is required, `cpexcel.full.mjs` must be manually imported:

<CodeBlock language="html">{`\
<script type="module">
/* load the codepage support library for extended support with older formats  */
import { set_cptable } from "https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs";
import * as cptable from 'https://cdn.sheetjs.com/xlsx-${current}/package/dist/cpexcel.full.mjs';
set_cptable(cptable);
</script>`}
</CodeBlock>

Web Worker support is noted in [the "Web Workers" demo](/docs/demos/bigdata/worker#installation)

### Dynamic Imports

Dynamic imports with `import()` will only download the SheetJS scripts when they
are used. This example will download the library when data is exported:

<CodeBlock language="html">{`\
<button id="xport">Export</button>
<script type="module">
xport.addEventListener("click", async() => {
\n\
  /* dynamically import the script in the event listener */
  // highlight-next-line
  const XLSX = await import("https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs");
\n\
  const wb = XLSX.utils.book_new();
  const ws = XLSX.utils.aoa_to_sheet([["a","b","c"],[1,2,3]]);
  XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
  XLSX.writeFile(wb, "SheetJSESMTest.xlsx");
});
</script>`}
</CodeBlock>

:::caution pass

The callback functions must be marked as `async` and the script block must have
the attribute `type="module"`

:::

If Encoding support is required, `cpexcel.full.mjs` must be manually imported:

<CodeBlock language="html">{`\
<button id="xport">Export</button>
<script type="module">
xport.addEventListener("click", async() => {
\n\
  /* dynamically import the scripts in the event listener */
  // highlight-start
  const XLSX = await import("https://cdn.sheetjs.com/xlsx-${current}/package/xlsx.mjs");
  const cptable = await import("https://cdn.sheetjs.com/xlsx-${current}/package/dist/cpexcel.full.mjs");
  XLSX.set_cptable(cptable);
  // highlight-end
\n\
  const wb = XLSX.utils.book_new();
  const ws = XLSX.utils.aoa_to_sheet([["a","b","c"],[1,2,3]]);
  XLSX.utils.book_append_sheet(wb, ws, "Sheet1");
  XLSX.writeFile(wb, "SheetJSESMTest.xlsx");
});
</script>`}
</CodeBlock>

## Bower

:::warning pass

Bower is deprecated and the maintainers recommend using other tools.

:::


The Bower package manager plays nice with the CDN tarballs:

<CodeBlock language="bash">{`\
npx bower install https://cdn.sheetjs.com/xlsx-${current}/xlsx-${current}.tgz`}
</CodeBlock>

Bower will place the standalone scripts in `bower_components/js-xlsx/dist/`