New Post: svg to png - transparent background

Trying to make white background for an tif image, but getting the jpg with same black background as tiff.

using the below code:

using (MagickImage image = new MagickImage())

                        {
                            image.BackgroundColor =System.Drawing.Color.White;
                            image.Read(filePath);
                            image.Format = MagickFormat.Jpg;
                            image.Write(convertDir + "\\" + file + ".jpg");
                        }

what's going wrong here?