How to set image in circle in swift

import UIKit

class ViewController: UIViewController {
  @IBOutlet weak var image: UIImageView!

  override func viewDidLoad() {
    super.viewDidLoad()
    
    image.layer.borderWidth = 1
    image.layer.masksToBounds = false
    image.layer.borderColor = UIColor.black.cgColor
    image.layer.cornerRadius = image.frame.height/2
    image.clipsToBounds = true
}

If you want it on an extension

import UIKit

extension UIImageView {
    
    func makeRounded() {
        
        layer.borderWidth = 1
        layer.masksToBounds = false
        layer.borderColor = UIColor.black.cgColor
        layer.cornerRadius = self.frame.height / 2
        clipsToBounds = true
    }
}

That is all you need….