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---
sidebar_label: Page.emulateMediaFeatures
---
# Page.emulateMediaFeatures() method
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#### Signature:
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```typescript
class Page {
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abstract emulateMediaFeatures(features?: MediaFeature[]): Promise< void > ;
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}
```
## Parameters
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< table > < thead > < tr > < th >
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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 >
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**Returns:**
Promise< void>
## 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
```