---
title: "zoomIn(_:)"
framework: pdfkit
role: symbol
role_heading: Instance Method
path: "pdfkit/pdfview/zoomin(_:)"
---

# zoomIn(_:)

Zooms in by increasing the scaling factor.

## Declaration

```swift
@IBAction func zoomIn(_ sender: Any?)
```

## Discussion

Discussion Each invocation of zoomIn muliplies the scaling factor by the square root of 2.

## See Also

### Zooming in a PDF View

- [canZoomIn](pdfkit/pdfview/canzoomin.md)
- [zoomOut(_:)](pdfkit/pdfview/zoomout(_:).md)
- [canZoomOut](pdfkit/pdfview/canzoomout.md)