You are very close actually. You should use the write method of
MagickImageCollection when you want to write multiple pages instead of a single page:MagickReadSettings settings = new MagickReadSettings(); settings.Density = new PointD(192, 192); using (MagickImageCollection images = new MagickImageCollection()) { // Add all the pages of the pdf file to the collection images.Read(sPdf, settings); // Save result as a multipage tiff images.Write( sPdf + ".tif"); }