Answer by NatashaTheRobot for How do I save a UIImage to a file?

In Swift 3:

// Create path.let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)let filePath = "\(paths[0])/MyImageName.png"// Save image.UIImagePNGRepresentation(image)?.writeToFile(filePath, atomically: true)