オンラインツールでPDF文書に署名する方法

// Open an existing PDF document or create a new one
PdfDocument pdf = PdfDocument.FromFile(@"C:\Path\To\ASPX to PDF.pdf");

// Prepare a signature stamp with specified dimensions and position
var signatureStamp = new HtmlStamp() 
{ 
    HTML = "<img src='signature.png' />", 
    Width = 150, 
    Height = 50, 
    Bottom = 300, 
    Left = 85, 
    ZIndex = HtmlStamp.StampLayer.OnTopOfExistingPDFContent 
};

// Apply the stamp to the first page of the PDF
pdf.StampHTML(signatureStamp, 1);

// Save the updated PDF file
pdf.SaveAs(@"C:\Path\To\ASPX to PDF.pdf");

' Open an existing PDF document or create a new one
Dim pdf As PdfDocument = PdfDocument.FromFile("C:\Path\To\ASPX to PDF.pdf")

' Prepare a signature stamp with specified dimensions and position
Dim signatureStamp = New HtmlStamp() With {
	.HTML = "<img src='signature.png' />",
	.Width = 150,
	.Height = 50,
	.Bottom = 300,
	.Left = 85,
	.ZIndex = HtmlStamp.StampLayer.OnTopOfExistingPDFContent
}

' Apply the stamp to the first page of the PDF
pdf.StampHTML(signatureStamp, 1)

' Save the updated PDF file
pdf.SaveAs("C:\Path\To\ASPX to PDF.pdf")

// "123456" represents the password for the signature certificate
new IronPdf.PdfSignature("CertificateFile.p12", "123456").SignPdfFile("ASPX to PDF.pdf");

' "123456" represents the password for the signature certificate
Call (New IronPdf.PdfSignature("CertificateFile.p12", "123456")).SignPdfFile("ASPX to PDF.pdf")

// Create a new PDF signature using a digital certificate
var signature = new IronPdf.PdfSignature("Iron.pfx", "123456");

// Render some content to PDF
PdfDocument doc = Renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>");

// Optional signing options and a handwritten signature graphic
signature.SigningContact = "support@ironsoftware.com";
signature.SigningLocation = "Chicago, USA";
signature.SigningReason = "To show how to sign a PDF";

// Load and apply a signature image to the document
signature.LoadSignatureImageFromFile("handwriting.png");

// Sign the PDF with the digital certificate and signature image
doc.SignPdfWithDigitalSignature(signature);

// Save the signed PDF document
doc.SaveAs("ASPX to PDF.pdf");

' Create a new PDF signature using a digital certificate
Dim signature = New IronPdf.PdfSignature("Iron.pfx", "123456")

' Render some content to PDF
Dim doc As PdfDocument = Renderer.RenderHtmlAsPdf("<h1>Testing 2048 bit digital security</h1>")

' Optional signing options and a handwritten signature graphic
signature.SigningContact = "support@ironsoftware.com"
signature.SigningLocation = "Chicago, USA"
signature.SigningReason = "To show how to sign a PDF"

' Load and apply a signature image to the document
signature.LoadSignatureImageFromFile("handwriting.png")

' Sign the PDF with the digital certificate and signature image
doc.SignPdfWithDigitalSignature(signature)

' Save the signed PDF document
doc.SaveAs("ASPX to PDF.pdf")