public static void Convert() { HtmlToPdfConverter converter = new HtmlToPdfConverter(); //Load html from stream using (Stream stream = File.OpenRead("sample.html")) { converter.Load(stream); } //Choose pdf compliance level, PDF or PDF/A converter.PdfStandard = PdfStandard.Pdf; //Convert html to pdf, and save it to file stream using (var stream = File.OpenWrite("convert.pdf")) { converter.Save(stream); } }