PdfToMarkdownConverter converter = new PdfToMarkdownConverter(inputFile); converter.MarkdownOptions.IgnoreImage = true; 
converter.ConvertToMarkdown(outputFile);

PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile(inputFile);

X509Certificate2 cert = new X509Certificate2(inputFile_pfx, "e-iceblue");
IPdfSignatureFormatter formatter = new PdfPKCS7Formatter(cert, false);
PdfMDPSignatureMaker pdfMDPSignatureMaker = new PdfMDPSignatureMaker(pdf, formatter);

PdfSignature signature = pdfMDPSignatureMaker.Signature;
signature.Name = "e-iceblue";
signature.ContactInfo = "028-81705109";
signature.Location = "chengdu";
signature.Reason = " this document";

PdfSignatureAppearance appearance = new PdfSignatureAppearance(signature);
appearance.NameLabel = "Signer: ";
appearance.ContactInfoLabel = "ContactInfo: ";
appearance.LocationLabel = "Loaction: ";
appearance.ReasonLabel = "Reason: ";

pdfMDPSignatureMaker.MakeSignature("signName", pdf.Pages[0], 100, 100, 250, 200, appearance);
pdf.SaveToFile(outputFile, FileFormat.PDF);
pdf.Dispose();

PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile(inputFile);
PdfFormWidget widgets = pdf.Form as PdfFormWidget;
for (int i = 0; i < widgets.FieldsWidget.List.Count; i++)
{
    PdfFieldWidget widget = widgets.FieldsWidget.List[i] as PdfFieldWidget;
    if (widget is PdfSignatureFieldWidget)
    {
        string originalName = widget.Name;
        X509Certificate2 cert = new X509Certificate2(inputFile_pfx, "e-iceblue");
        IPdfSignatureFormatter formatter = new PdfPKCS7Formatter(cert, false);

        // PdfMDPSignatureMaker signatureMaker = new PdfMDPSignatureMaker(pdf, formatter);
        PdfOrdinarySignatureMaker signatureMaker = new PdfOrdinarySignatureMaker(pdf, formatter);

        PdfSignature signature = signatureMaker.Signature;
        signature.Name = "E-iceblue";
        signature.ContactInfo = "028-81705109";
        signature.Location = "chengdu";
        signature.Reason = "document";

        PdfSignatureAppearance appearance = new PdfSignatureAppearance(signature);
        appearance.NameLabel = "Signer: ";
        appearance.ContactInfoLabel = "ContactInfo: ";
        appearance.LocationLabel = "Loaction: ";
        appearance.ReasonLabel = "Reason: ";
        appearance.SignatureImage = PdfImage.FromFile(inputFile_Img);
        appearance.GraphicMode = GraphicMode.SignImageAndSignDetail;

        signatureMaker.MakeSignature(originalName, appearance);
    }
}
pdf.SaveToFile(outputFile);
pdf.Dispose();

string chromeLocation = baseDirectory + "chrome\\Chrome-bin\\chrome.exe";
ChromeHtmlConverter converter = new ChromeHtmlConverter(chromeLocation);
ConvertOptions options = new ConvertOptions();
options.Timeout = 10 * 1000;
options.PageSettings = new PageSettings()
{
    PaperWidth = 8.77,
    PaperHeight = 6.20,
    MarginBottom = 0,
    MarginTop = 0,
    MarginLeft = 0,
    MarginRight = 0
    };
converter.ConvertToPdf("https://www.e-iceblue.com/", outputFile, options);

var pdfAsStream = new MemoryStream();
string chromeLocation = baseDirectory + "chrome\\Chrome-bin\\chrome.exe";
ChromeHtmlConverter converter = new ChromeHtmlConverter(chromeLocation);
ConvertOptions options = new ConvertOptions();
options.Timeout = 10 * 1000;
options.PageSettings = new PageSettings()
{
    PaperWidth = 8.77,
    PaperHeight = 6.2,
    MarginBottom = 0,
    MarginTop = 0,
    MarginLeft = 0,
    MarginRight = 0
    };
converter.ConvertToPdf("https://www.e-iceblue.com/", pdfAsStream, options);

pdfDocument.ConvertOptions.SetPdfToXlsxOptions(new XlsxLineLayoutOptions(true, false, false)); //bool convertToMultipleSheet, bool rotatedText, bool splitCell

PdfStandardsConverter converter = new PdfStandardsConverter(stream);
converter.Options.PreserveAllowedMetadata = true;

PdfDocument doc = new PdfDocument("input.pdf");
doc.SaveToFile("output.md", FileFormat.Markdown);

PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile(inputFile);
PdfPageBase page = pdf.Pages[0];
PdfTextFinder finds = new PdfTextFinder(page);
finds.Options.Parameter = TextFindParameter.None;
List result = finds.Find("hello");
StringBuilder str = new StringBuilder();
foreach (PdfTextFragment find in result)
{
	string text = find.LineText;
	string FontName = find.TextStates[0].FontName;
	float FontSize = find.TextStates[0].FontSize;
	string FontFamily = find.TextStates[0].FontFamily;
	bool IsBold = find.TextStates[0].IsBold;
	bool IsSimulateBold = find.TextStates[0].IsSimulateBold;
	bool IsItalic = find.TextStates[0].IsItalic;
	Color color = find.TextStates[0].ForegroundColor;
	str.AppendLine(text);
	str.AppendLine("FontName: " + FontName);
	str.AppendLine("FontSize: " + FontSize);
	str.AppendLine("FontFamily: " + FontFamily);
	str.AppendLine("IsBold: " + IsBold);
	str.AppendLine("IsSimulateBold: " + IsSimulateBold);
	str.AppendLine("IsItalic: " + IsItalic);
	str.AppendLine("color: " + color);
	str.AppendLine(" ");
}
PdfTextReplacer ptr = new PdfTextReplacer(page);
ptr.ReplaceAllText("hello", "New");
File.WriteAllText(outputFile_T, str.ToString());
pdf.SaveToFile(outputFile);
pdf.Dispose();

PdfDocument pdf = new PdfDocument();
pdf.LoadFromFile(inputFile);
pdf.RegisterProgressNotifier(new CustomProgressNotifier());
pdf.SaveToFile(outputFile, FileFormat.XPS);
pdf.Close();

public class CustomProgressNotifier :IProgressNotifier
{
	StringBuilder str = new StringBuilder();
	public void Notify(float progress)
	{
		str.AppendLine(progress + "%");
		File.WriteAllText(outputFile_txt, str.ToString());
	}
}