SWIFT

convert image to base64 in swift ui

   func convertImageToBase64(image: UIImage) -> String? {
    let imageData = image.jpegData(compressionQuality: 1)
    return imageData?.base64EncodedString(options: 
    Data.Base64EncodingOptions.lineLength64Characters)
   }

convert image to base64 swift Ui

//Use image name from bundle to create NSData
let image : UIImage = UIImage(named:"imageNameHere")!
//Now use image to create into NSData format
let imageData:NSData = UIImagePNGRepresentation(image)!

//OR next possibility

//Use image's path to create NSData
let url:NSURL = NSURL(string : "urlHere")!
//Now use image to create into NSData format
let imageData:NSData = NSData.init(contentsOfURL: url)!

let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
let decodedimage = UIImage(data: dataDecoded)
yourImageView.image = decodedimage