---
title: Pattern.use()
---

The `Pattern.use()` method will load a FreeSewing plugin.
Plugins are a way to extend a pattern's functionality.
For more details, refer to [the plugin guide](/guides/plugins/).

:::note
This method is chainable as it returns the Pattern object
:::

## Pattern.use() signature

```js
Pattern pattern.use(object plugin)
// or
Pattern pattern.use(object plugin, object plugin_data)
```

See [the plugin guide](/guides/plugins/) for details on how to structure
you plugin object.

## Pattern.use() example

```js
import { Aaron } from '@freesewing/aaron'
import { pluginTheme } from '@freesewing/plugin-theme'

// Load some public test measurements from the FreeSewing backend
const measurements = (
  await (await fetch('https://backend3.freesewing.org/curated-sets/1.json')).json()
).measurements

const pattern = new Aaron({ measurements }).use(pluginTheme)

const svg = pattern.draft().render()
```
