public static void Convert2() { HtmlToPdfConverter converter = new HtmlToPdfConverter(); //Define the css for the html content converter.DefaultStyleSheet = ".para{font-size: 24px; color: #FF0000;}"; string htmlContent = "<p class=\"para\">Content with special style.</p><p>Content without style</p>"; converter.Load(htmlContent); //Choose pdf compliance level, PDF or PDF/A converter.PdfStandard = PdfStandard.Pdf; File.WriteAllBytes("convert.pdf", converter.SaveAsBytes()); }