---
title: kCGImageSourceCreateThumbnailWithTransform
framework: imageio
role: symbol
role_heading: Global Variable
path: imageio/kcgimagesourcecreatethumbnailwithtransform
---

# kCGImageSourceCreateThumbnailWithTransform

A Boolean value that indicates whether to rotate and scale the thumbnail image to match the image’s orientation and aspect ratio.

## Declaration

```swift
let kCGImageSourceCreateThumbnailWithTransform: CFString
```

## Discussion

Discussion The value of this key must be a CFBoolean value. The default value is kCFBooleanFalse.

## See Also

### Specifying the Read Options

- [kCGImageSourceTypeIdentifierHint](imageio/kcgimagesourcetypeidentifierhint.md)
- [kCGImageSourceShouldAllowFloat](imageio/kcgimagesourceshouldallowfloat.md)
- [kCGImageSourceShouldCache](imageio/kcgimagesourceshouldcache.md)
- [kCGImageSourceShouldCacheImmediately](imageio/kcgimagesourceshouldcacheimmediately.md)
- [kCGImageSourceCreateThumbnailFromImageIfAbsent](imageio/kcgimagesourcecreatethumbnailfromimageifabsent.md)
- [kCGImageSourceCreateThumbnailFromImageAlways](imageio/kcgimagesourcecreatethumbnailfromimagealways.md)
- [kCGImageSourceThumbnailMaxPixelSize](imageio/kcgimagesourcethumbnailmaxpixelsize.md)
- [kCGImageSourceSubsampleFactor](imageio/kcgimagesourcesubsamplefactor.md)