kCGImagePropertyImages
An array of dictionaries, each of which contains metadata for one of the images in the file.
Declaration
let kCGImagePropertyImages: CFStringDiscussion
The value of this property is a CFArray. Each element in the array is a CFDictionary that contains metadata for one of the images. For example, the dictionary might contain the width and height of the image, the image’s color space name, thumbnail image information, and any auxiliary data.