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kCGImageSourceThumbnailMaxPixelSize

The maximum width and height of a thumbnail image, specified in pixels.

Declaration

let kCGImageSourceThumbnailMaxPixelSize: CFString

Discussion

If this key is not specified, the width and height of a thumbnail is not limited and thumbnails may be as big as the image itself. If present, this key must be a CFNumber value. This key can be provided in the options dictionary that you pass to the function CGImageSourceCreateThumbnailAtIndex(_:_:_:).

See Also

Specifying the Read Options