UIImage Extension Swift 3 - Change Alpha & Scale / Change Size

gistfile1.txt

extension UIImage {
    
    func alpha(value: CGFloat) -> UIImage {
        let format = UIGraphicsImageRendererFormat()
        return UIGraphicsImageRenderer(size: size, format: format).image { _ in
            draw(at: CGPoint.zero, blendMode: .normal, alpha: value)
        }
    }
    
    
    func scale(newSize: CGSize) -> UIImage {
        let format = UIGraphicsImageRendererFormat()
        return UIGraphicsImageRenderer(size: newSize, format: format).image { _ in
            draw(at: CGPoint.zero)
        }
    }

}