UIImage+Extension.swift

extension UIImage {
    
    enum Quality: CGFloat {
        case worst  = 0
        case low     = 0.25
        case medium  = 0.5
        case high    = 0.75
        case best  = 1
    }
  
    var png: Data? { return UIImagePNGRepresentation(self) }
    
    func jpeg(_ quality: Quality) -> Data? {
        return UIImageJPEGRepresentation(self, quality.rawValue)
    }
}