Convert UIWebview contents to a UIImage when the webview is larger than the screen

I got the answer:

You have to set the frame of the Webview to the full content size just before you create the image. After this just set the size back to origin:

+ (UIImage *) imageFromWebView:(UIWebView *)view
{
    // tempframe to reset view size after image was created
    CGRect tmpFrame         = view.frame;

    // set new Frame
    CGRect aFrame               = view.frame;
    aFrame.size.height  = [view sizeThatFits:[[UIScreen mainScreen] bounds].size].height;
    view.frame              = aFrame;

    // do image magic
    UIGraphicsBeginImageContext([view sizeThatFits:[[UIScreen mainScreen] bounds].size]);

    CGContextRef resizedContext = UIGraphicsGetCurrentContext();
    [view.layer renderInContext:resizedContext];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    // reset Frame of view to origin
    view.frame = tmpFrame;
    return image;
}

D R's answer is fine. The only thing missing is taking into account the scale of screen. I have it corrected in my Swift version and it works fine for me.

extension UIWebView{
func snapshotForCompletePage() -> UIImage {
    // tempframe to reset view size after image was created
    let tmpFrame: CGRect = self.frame
    // set full size Frame
    var fullSizeFrame: CGRect = self.frame
    fullSizeFrame.size.height = self.scrollView.contentSize.height
    self.frame = fullSizeFrame

    // here the image magic begins
    UIGraphicsBeginImageContextWithOptions(fullSizeFrame.size, false, UIScreen.mainScreen().scale)
    let resizedContext: CGContextRef = UIGraphicsGetCurrentContext()!
    self.layer.renderInContext(resizedContext)
    let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    // reset Frame of view to origin
    self.frame = tmpFrame
    return image
      }
    }

@Jibeex's answer worked for me. But I had to add the following code

    fullSizeFrame.size.width = self.scrollView.contentSize.width

below

    fullSizeFrame.size.height = self.scrollView.contentSize.height

for it to fully work. Writing as answer because I don't have enough reputation to comment.