title: Saving pdf from icloud and and converting to base64 in swift 3
body: <p>I want to select a pdf from icloud and convert it into base64 so that i can upload it to further .I have selected the file from icloud but i ab not able to convert it into base64</p>
  
  <pre><code>   @IBAction func PdfBtn(_ sender: Any) {
  
      let importMenu = UIDocumentMenuViewController(documentTypes: ["public.composite-content"], in: .import)
      importMenu.delegate = self
      present(importMenu, animated: true, completion: nil)
  
  }
  
  
  @available(iOS 8.0, *)
  public func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentAt url: URL) {
  
  
      let link = url as URL
      print("The Url is : \(link)")
  
  
  
  
  
  
  }
  
  @available(iOS 8.0, *)
  public func documentMenu(_ documentMenu: UIDocumentMenuViewController, didPickDocumentPicker documentPicker: UIDocumentPickerViewController) {
  
      documentPicker.delegate = self
      present(documentPicker, animated: true, completion: nil)
  
  
  }
  
  
  
  
  
  func documentPickerWasCancelled(_ controller: UIDocumentPickerViewController) {
  
      print("we cancelled")
  
      dismiss(animated: true, completion: nil)
  
  
  }
  </code></pre>
  
  <p>please help .    </p>