---
title: kCGImagePropertyDNGPreviewSettingsDigest
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagepropertydngpreviewsettingsdigest
---

# kCGImagePropertyDNGPreviewSettingsDigest

A unique ID of the conversion settings used to render the preview.

## Declaration

```swift
let kCGImagePropertyDNGPreviewSettingsDigest: CFString
```

## See Also

### Preview

- [kCGImagePropertyDNGPreviewApplicationName](imageio/kcgimagepropertydngpreviewapplicationname.md)
- [kCGImagePropertyDNGPreviewApplicationVersion](imageio/kcgimagepropertydngpreviewapplicationversion.md)
- [kCGImagePropertyDNGPreviewSettingsName](imageio/kcgimagepropertydngpreviewsettingsname.md)
- [kCGImagePropertyDNGPreviewColorSpace](imageio/kcgimagepropertydngpreviewcolorspace.md)
- [kCGImagePropertyDNGPreviewDateTime](imageio/kcgimagepropertydngpreviewdatetime.md)