puppeteer/website/versioned_docs/version-22.8.1/api/puppeteer.page.emulatemediafeatures.md

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---
sidebar_label: Page.emulateMediaFeatures
---
# Page.emulateMediaFeatures() method
2022-10-24 14:31:12 +00:00
#### Signature:
```typescript
class Page {
abstract emulateMediaFeatures(features?: MediaFeature[]): Promise<void>;
}
```
## Parameters
<table><thead><tr><th>
Parameter
</th><th>
Type
</th><th>
Description
</th></tr></thead>
<tbody><tr><td>
features
</td><td>
[MediaFeature](./puppeteer.mediafeature.md)\[\]
</td><td>
_(Optional)_ `<?Array<Object>>` Given an array of media feature objects, emulates CSS media features on the page. Each media feature object must have the following properties:
</td></tr>
</tbody></table>
**Returns:**
Promise&lt;void&gt;
## Example
```ts
await page.emulateMediaFeatures([
{name: 'prefers-color-scheme', value: 'dark'},
]);
await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
// → true
await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
// → false
await page.emulateMediaFeatures([
{name: 'prefers-reduced-motion', value: 'reduce'},
]);
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: reduce)').matches
);
// → true
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: no-preference)').matches
);
// → false
await page.emulateMediaFeatures([
{name: 'prefers-color-scheme', value: 'dark'},
{name: 'prefers-reduced-motion', value: 'reduce'},
]);
await page.evaluate(() => matchMedia('(prefers-color-scheme: dark)').matches);
// → true
await page.evaluate(() => matchMedia('(prefers-color-scheme: light)').matches);
// → false
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: reduce)').matches
);
// → true
await page.evaluate(
() => matchMedia('(prefers-reduced-motion: no-preference)').matches
);
// → false
await page.emulateMediaFeatures([{name: 'color-gamut', value: 'p3'}]);
await page.evaluate(() => matchMedia('(color-gamut: srgb)').matches);
// → true
await page.evaluate(() => matchMedia('(color-gamut: p3)').matches);
// → true
await page.evaluate(() => matchMedia('(color-gamut: rec2020)').matches);
// → false
```