GroupDocs.Signature allows Java developers to prevent changes in PDF documents using digital signatures. Empower your business applications with the ability to secure important data.
// Use Signature with the document for digital signing
Signature signature = new Signature("input.pdf");
// Provide a digital certificate and password
DigitalSignOptions options = new DigitalSignOptions("certificate.pfx");
options.setPassword("1234567890");
// Set up visual representation if needed
options.setPageNumber(1);
options.setLeft(100);
options.setTop(100);
// Protect the document with a digital certificate
SignResult result = signature.sign("output.pdf", options);
The GroupDocs.Signature for Java library is capable of signing all popular file formats. Add, modify, verify, or delete various types of signatures automatically to streamline your business processes.
Text, Image, Barcode, QR-Code, or Stamp signatures can be precisely added to any page of any supported document. Hidden metadata like EXIF can be added or edited in images and most file types. Protect document content from unauthorized changes using digital signatures.
Documents can be processed in various ways after signing. Verify signed documents to ensure they have been processed properly. If you need more control, retrieve a list of all signatures through search.
Most types of signatures support further modification. You are free to correct text, change position, color, size, and more.
Our solution supports full CRUD operations for signatures. Many types of signatures, including digital certificates, can be deleted from a document when necessary.
// Provide a document for signing
Signature signature = new Signature("input.pdf");
// Use a valid digital certificate with a password
DigitalSignOptions options = new DigitalSignOptions("certificate.pfx");
options.setPassword("1234567890");
// Specify additional text data
options.setReason("Security issue");
options.setContact("John Smith");
options.setLocation("Office D.W.");
// Use an image and other options for visual representation
options.setImageFilePath("image.png");
options.setAllPages(true);
options.setVerticalAlignment(VerticalAlignment.Bottom);
options.setHorizontalAlignment(HorizontalAlignment.Right);
options.setWidth(80);
options.setHeight(60);
Padding padding = new Padding();
padding.setBottom(10);
padding.setRight(10);
options.setMargin(padding);
// Save the protected document to a different location
SignResult result = signature.sign("output.pdf", options);
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Explore documentation, code samples, and community support to enhance your experience.
We take pride in the extensive functionality and signature support our platform offers
The Java API allows you to process more than 60 formats. Create and add various signatures to any page, seal content with digital certificates, and manage and edit existing signatures within the document.
