string url = "http://corememberguide.hostplus.staging.clickdm.com.au/pdf/pdf-fees-and-costs";
            var doc = new PdfDocument();

            HtmlToPdf.Options.AutoFitX = HtmlToPdfAutoFitMode.None;
            //HtmlToPdf.Options.ZoomLevel = .8f;

            // Setting header and footer format
            //HtmlToPdf.Options.HeaderHtmlFormat = "";
            HtmlToPdf.Options.FooterHtmlFormat = "We're here to help - call 1300 HOST<strong>PLUS</strong> (1300 467 875), 8am - 8pm, Monday to Friday or visit hostplus.com.au";

            SizeF pageSize = PdfPageSizes.A4;
            float marginLeft = 2;
            float marginTop = 1;
            float marginRight = 2;
            float marginBottom = 1;

            HtmlToPdf.Options.PageSize = pageSize;
            HtmlToPdf.Options.OutputArea = new RectangleF(
                marginLeft,
                marginTop,
                pageSize.Width - marginLeft - marginRight,
                pageSize.Height - marginTop - marginBottom);



            HtmlToPdfResult result = HtmlToPdf.ConvertUrl(url, doc);

            // Now search for all elements with class name set to "sflistTitle"
            HtmlElement[] elements = result.HtmlDocument.GetElementsByClassName("sflistTitle");

            // Create a bookmark for each of these elements
            foreach (HtmlElement element in elements)
            {
                // Skip invisible elements
                if (!element.IsVisible)
                {
                    continue;
                }

                // Create the bookmark
                PdfBookmark bookmark = element.CreateBookmark();
                doc.Bookmarks.Add(bookmark);

                //To create child bookmarks, create a new 
                //PdfBookmark object and then add it to the
                //parent bookmark's ChildNodes collection
            }


            doc.Save(@"c:\temp\EssentialObjectsUrl.pdf");