PDF digital signature library

Secure and manage document workflows with robust signing functionality

Create, validate, and control digital signatures to streamline document approvals, maintain authenticity, and meet regulatory standards.

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Use cases

Multiple digital signature types

Implement and validate document approval, certification, and timestamp signatures. Enable signature chains within a single document.

Cryptographic provider integration

Connect with local and online cryptographic providers, including PKCS#11 devices, HSMs, and cloud services like GlobalSign and Swisscom.

Advanced signature standards compliance

Generate signatures that are compliant with PAdES (PDF Advanced Electronic Signatures) standards, including long-term validation (LTV) support for B-LT and B-LTA levels.

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Customizable visual appearance

Create signature appearances using XML or JSON configurations. Include text, images, and PDF pages in the visual representation.

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High-volume signature automation

Process large volumes of documents with digital signatures efficiently. Customize signing rules and integrate with various document sources and destinations.

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Configurable signature processes

Add new digital signatures to already-signed PDF/A documents while preserving existing signatures. Suitable for multi-step approval workflows and long-term archiving.

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