Creates an image from initials. Use this with UIImageView

UIImage+Letters.swift

extension UIImage {
    static func fromInitials(_ string: String, size: CGSize, backGroundColor: UIColor, textAttributes: [NSAttributedString.Key: Any]? = nil) -> UIImage? {

        let text = string.initials
        let scale = Float(UIScreen.main.scale)
        UIGraphicsBeginImageContextWithOptions(size, false, CGFloat(scale))
        let context = UIGraphicsGetCurrentContext()
        context?.setFillColor(backGroundColor.cgColor)
        context?.fill(CGRect(x: 0, y: 0, width: size.width, height: size.height))

        let defaultAttributes = [
            NSAttributedString.Key.foregroundColor: UIColor.white,
             NSAttributedString.Key.font: UIFont.systemFont(ofSize: 15.0)
        ]

        let attributes = textAttributes ?? defaultAttributes

        let textSize = text.size(withAttributes: attributes)
        let rect = CGRect(x: size.width/2 - textSize.width/2,
                          y: size.height/2 - textSize.height/2,
                          width: textSize.width,
                          height: textSize.height)

        text.draw(in: rect, withAttributes: attributes)

        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        return image
    }
}