A workaround I found is to first draw the image using a format that is opaque and uses a standard color range and then draw that new image in the PDF context.
let image = ...
// Re-draw image to adjust color range etc.
let format = UIGraphicsImageRendererFormat.default()
format.preferredRange = .standard
format.opaque = true
format.scale = 1 // non-retina
let newImage = UIGraphicsImageRenderer(size: image.size, format: format).image { _ in
image.draw(in: CGRect(origin: .zero, size: image.size))
}
// Draw in PDF context
newImage.draw(in: CGRect(origin: .zero, size: newImage.size))
Mennny
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