puppeteer/website/versioned_docs/version-19.4.0/api/puppeteer.viewport.devicescalefactor.md

---
sidebar_label: Viewport.deviceScaleFactor
---

# Viewport.deviceScaleFactor property

Specify device scale factor. See [devicePixelRatio](https://developer.mozilla.org/en-US/docs/Web/API/Window/devicePixelRatio) for more info.

#### Signature:

```typescript
interface Viewport {
  deviceScaleFactor?: number;
}
```

#### Default value:

1