New Post: Removing white from image with white background where gradients are present

using (MagickImage image = new MagickImage("{input file path}"))
{
  image.AddProfile(ColorProfile.SRGB);
  image.Strip();
  image.Negate();
  image.Alpha(AlphaOption.Copy);
  image.Colorize(MagickColors.Black, new Percentage(100));
  image.Write("{Output file path}");
}