How to get the Size (KB) of UIImage

Question

I am getting Image from didFinishPickingMediaWithInfo.

UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];
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Answer 1

    UIImage *originalImage = (UIImage*)[info valueForKey:UIImagePickerControllerOriginalImage];
    NSData *imgData = UIImageJPEGRepresentation(originalImage, 1); //1 it represents the quality of the image.
    NSLog(@"Size of Image(bytes):%d",[imgData length]);
    imgData = nil;