How to upload images to azure without losing quality with image data swift

Question

Currently, I am using below to upload an image in Azure blob

  let im:UIImage = catImage[i]
            let imageData = im.pngData()
            blob.upload(from: imageData!, completionHandler:{(NSError) -> Void in
                print( i , "uploaded")

                print(blob.metadata)
                print(i , imageData)
            })

but I am losing image quality because of pngdata(). What else I can use without losing quality.

Answer 1

Similar question here: UIImage to raw NSData / avoid compression

Trying to save a UIImage without compression.

Answer 2

这是我的图像选择器的一个问题，通过直接选择相位而不是图像来解决