---
title: "init(passThumbnail:localizedDescription:)"
framework: passkit
role: symbol
role_heading: Initializer
path: "passkit/pkaddpassmetadatapreview/init(passthumbnail:localizeddescription:)"
---

# init(passThumbnail:localizedDescription:)

Provides a preview of an image object that represents the pass you add to Wallet.

## Declaration

```swift
init(passThumbnail: CGImage, localizedDescription description: String)
```

## Parameters

- `passThumbnail`: A CGImage object that represents the card artwork of the pass you use during provisioning.
- `description`: A localized description of the pass.

## Discussion

Discussion This method throws an invalidInput error if a JPKI applet doesn’t back the pass.

## See Also

### Creating a preview of the pass

- [localizedDescription](passkit/pkaddpassmetadatapreview/localizeddescription.md)
- [passThumbnailImage](passkit/pkaddpassmetadatapreview/passthumbnailimage.md)