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# properties

Returns the metadata properties dictionary of the image.

```
var properties: [String : Any] { get }
```

## Discussion

If the [`CIImage`](/documentation/CoreImage/CIImage) was created from `NSURL` or `NSData` then this dictionary is determined by calling `CGImageSourceCopyPropertiesAtIndex()`.

If the [`CIImage`](/documentation/CoreImage/CIImage) was created with the [`properties`](/documentation/CoreImage/CIImageOption/properties) option, then that dictionary is returned.

If the [`CIImage`](/documentation/CoreImage/CIImage) was created by applying [`CIFilter`](/documentation/CoreImage/CIFilter-swift.class) or [`CIKernel`](/documentation/CoreImage/CIKernel) then the
properties of the root inputImage will be returned.

---

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