kCGImageDestinationBackgroundColor
The background color to use when the image has an alpha component, but the destination format doesn’t support alpha.
Declaration
let kCGImageDestinationBackgroundColor: CFStringDiscussion
If present, the value associated with this key must be a CGColor data type without an alpha component of its own. If not present, and if a background color is needed, a white color is used.
See Also
Configuring the Image Behaviors
kCGImageDestinationLossyCompressionQualitykCGImageDestinationDateTimekCGImageDestinationEmbedThumbnailkCGImageDestinationImageMaxPixelSizekCGImageDestinationMetadatakCGImageDestinationMergeMetadatakCGImageDestinationOptimizeColorForSharingkCGImageDestinationOrientationkCGImageDestinationPreserveGainMapkCGImageMetadataShouldExcludeGPSkCGImageMetadataShouldExcludeXMP