> For the complete documentation index, see [llms.txt](https://v1.purgecss.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://v1.purgecss.com/javascript-api.md).

# JavaScript API

Start by installing PurgeCSS as a dev dependency.

```
npm i -D purgecss
```

You can now use PurgeCSS inside a JavaScript file.

In the following examples, the options passed to PurgeCSS are the same as the ones [here](/configuration.md). The result `purgecssResult` is an array of an object containing the name of the files with the purged CSS.

## ES6 with import

```javascript
import Purgecss from 'purgecss'
const purgeCss = new Purgecss({
  content: ['**/*.html'],
  css: ['**/*.css']
})
const purgecssResult = purgecss.purge()
```

The format of purgecssResult is

```javascript
[
    {
        file: 'main.css',
        css: '/* purged css for main.css */'
    },
    {
        file: 'animate.css',
        css: '/* purged css for animate.css */'
    }
]
```

## ES5 with require

```javascript
var Purgecss = require('purgecss')
var purgecss = new Purgecss({
  content: ['**/*.html'],
  css: ['**/*.css']
})
var purgecssResult = purgecss.purge()
```


---

# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://v1.purgecss.com/javascript-api.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
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