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# CGImageSourceCopyPropertiesAtIndex(_:_:_:)

Returns the properties of the image at a specified location in an image source.

```
func CGImageSourceCopyPropertiesAtIndex(_ isrc: CGImageSource, _ index: Int, _ options: CFDictionary?) -> CFDictionary?
```

## Parameters

`isrc`

The image source that contains the image data.

`index`

The zero-based index into the images of the image source. If the index is invalid, this method returns `NULL`.

`options`

A dictionary you can use to request additional options. For a list of possible values, see [`Specifying the Read Options`](/documentation/ImageIO/CGImageSource#Specifying-the-Read-Options).

## Return Value

A dictionary that contains the properties associated with the image. See `CGImageProperties` for a list of properties that allowed in the dictionary.

## Discussion

---

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