---
title: "setViewportSize(viewportSize) | Grafana k6 documentation"
description: "Browser module: page.setViewportSize(viewportSize) method"
---

# setViewportSize(viewportSize)

This will update the page’s width and height.

Expand table

| Parameter           | Type   | Default | Description                                                                          |
|---------------------|--------|---------|--------------------------------------------------------------------------------------|
| viewportSize        | Object |         | An object containing the additional HTTP headers. All header values must be strings. |
| viewportSize.width  | number |         | Page width in pixels.                                                                |
| viewportSize.height | number |         | Page height in pixels.                                                               |

### Returns

Expand table

| Type            | Description                                            |
|-----------------|--------------------------------------------------------|
| `Promise<void>` | A Promise that fulfills when the viewport size is set. |

### Example

JavaScript ![Copy code to clipboard](/media/images/icons/icon-copy-small-2.svg) Copy

```javascript
import { browser } from 'k6/browser';

export const options = {
  scenarios: {
    browser: {
      executor: 'shared-iterations',
      options: {
        browser: {
          type: 'chromium',
        },
      },
    },
  },
};

export default async function () {
  const page = await browser.newPage();

  await page.setViewportSize({
    width: 640,
    height: 480,
  });
  await page.goto('https://test.k6.io/browser.php');
}
```