Sign thousands of documents
in one batch
Automate mass signing and document sealing with batch processing. Apply organization certificates, qualified seals, or digital signatures to thousands of documents in seconds, no manual intervention required.
What is Batch Signing?
Batch Signing
Sign hundreds or thousands of documents automatically with one action. Upload your documents, select a signing certificate, and execute the entire batch in seconds. Used for mass certification, sealing, and stamping of documents at scale.
Waarmerken / Sealing
Apply an organization certificate to documents as a digital seal. This proves the authenticity and integrity of documents without requiring a personal signature. Ideal for automated processes and official organizational documents.
Use cases
Invoice certification
Automatically seal thousands of invoices with your organization certificate. Ensure authenticity and prevent tampering for all outgoing invoices.
Diplomas & certificates
Universities and schools batch-sign diplomas and certificates at graduation. Process thousands of documents in minutes instead of weeks.
HR documents
Batch-seal employment contracts, payslips, and HR letters. Process hundreds of documents during onboarding or year-end cycles.
Insurance documents
Mass-seal policies, claims documents, and certificates of insurance. Automate end-of-month and renewal processing.
How Batch Signing works
Upload documents
Drag & drop documents or upload via API. Supports PDF, XML, and other standard formats. Upload thousands of files at once.
Select certificate
Choose your signing certificate: organization certificate, PKIoverheid, or qualified seal (eIDAS). Configure signing profile once.
Configure signing
Choose invisible signature, visible stamp, or both. Set stamp position, size, and appearance. Apply to all documents in the batch.
Execute batch
Sign all documents in seconds. Download the signed batch or distribute automatically. Full audit trail included.
Certificate types
Organization certificate
Standard organization seal for internal documents, invoices, and correspondence. Proves the document originates from your organization.
PKIoverheid certificate
Government-accredited certificate for official documents. Required for Dutch government communications and regulated industries.
Qualified Seal (eIDAS)
EU-wide recognized electronic seal providing the highest level of assurance. Legally equivalent to an organization stamp across all EU member states.
See ValidSign in action
Experience the complete signing workflow, from document upload to legally binding signature.