---
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

## Remarks

Setting this value to `0` will set the deviceScaleFactor to the system default.