---
title: previewImageHandler
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/nsitemprovider/previewimagehandler
---

# previewImageHandler

The custom preview image handler block for the item provider.

## Declaration

```swift
var previewImageHandler: NSItemProvider.LoadHandler? { get set }
```

## Discussion

Discussion In your image handler block, return an NSURL object that specifies a file, or return an NSData object.

## See Also

### Loading a preview image

- [loadPreviewImage(options:completionHandler:)](foundation/nsitemprovider/loadpreviewimage(options:completionhandler:).md)