puppeteer/docs/api/puppeteer.page.emulate.md

---
sidebar_label: Page.emulate
---

# Page.emulate() method

Emulates a given device's metrics and user agent.

To aid emulation, Puppeteer provides a list of known devices that can be via [KnownDevices](./puppeteer.knowndevices.md).

#### Signature:

```typescript
class Page {
  emulate(device: Device): Promise<void>;
}
```

## Parameters

<table><thead><tr><th>

Parameter

</th><th>

Type

</th><th>

Description

</th></tr></thead>
<tbody><tr><td>

device

</td><td>

[Device](./puppeteer.device.md)

</td><td>

</td></tr>
</tbody></table>
**Returns:**

Promise&lt;void&gt;

## Remarks

This method is a shortcut for calling two methods: [Page.setUserAgent()](./puppeteer.page.setuseragent.md) and [Page.setViewport()](./puppeteer.page.setviewport.md).

This method will resize the page. A lot of websites don't expect phones to change size, so you should emulate before navigating to the page.

## Example

```ts
import {KnownDevices} from 'puppeteer';
const iPhone = KnownDevices['iPhone 6'];

(async () => {
  const browser = await puppeteer.launch();
  const page = await browser.newPage();
  await page.emulate(iPhone);
  await page.goto('https://www.google.com');
  // other actions...
  await browser.close();
})();
```