SetaPDF-Signer Digital sign PDF documents with PHP

Guarantee PDF document integrity with PHP

The SetaPDF-Signer component allows PHP developers to build solutions to digital sign PDF documents in pure PHP.

Digital signatures in PDF documents serve two purposes: The signature guarantees the PDF document's integrity and it allows the recipient to identify the signer of a PDF document.

The PHP component offers the following key features:

• Completely written in PHP
• Compatible with all available PDF versions
• Digital sign PDF documents with any X509 Certificate
• Sign or Certify Documents
• Create PAdES conform PDF signatures in PHP
• Resolving of validation related information (VRI) for Long-Term Validation (LTV)
• Modules for cloud key management services (Azure Key Vault / AWS KMS / Google Cloud KMS)
• Module to access keys stored on PKCS #11 compatible devices
• Use client side USB tokens through bridge applications such as Fortify
• Extendable via individual modules
• Optional signature modules on request
• Visible signatures
• RFC 3161 compatible timestamping
• Easy to understand usage

In Action [See all demos]

Qualified Document Level Timestamp Signatures

Add a qualified document level timestamp signature to a PDF document.

Google Cloud KMS

Use the SetaPDF-Signer component with keys stored in Google Cloud Key Management Service.

Find more in the demos section.