PDF Signature Generation
Upload any PDF, add signature fields, and generate tamper-proof signed documents with embedded digital certificates.
PDF Capabilities
PDF Upload & Processing
Upload any PDF document and prepare it for signature fields in seconds.
Multi-Page Support
Full support for documents of any length, place fields on any page.
PDF Flattening
Flatten signed PDFs so form fields become permanent, tamper-proof content.
Digital Certificate Embedding
Embed X.509 digital certificates directly into signed PDFs for verification.
Certificate of Completion
Auto-generated PDF certificate with the complete audit trail appended.
Signed PDF Download
Instant download of finalized, signed documents for all parties.
Watermarking
Add custom watermarks like 'DRAFT' or 'CONFIDENTIAL' to documents.
High-Resolution Rendering
Crystal-clear signature rendering at any zoom level in the final PDF.
Frequently Asked Questions
What PDF features does WPsigner support?
WPsigner handles PDF upload, multi-page document processing, drag-and-drop field placement, digital certificate embedding (X.509), PDF flattening for tamper prevention, watermarking, and automatic Certificate of Completion generation. The signed PDF includes all signatures, form data, and an audit trail.
What is PDF flattening?
PDF flattening converts interactive form fields (signature fields, text inputs, checkboxes) into static content permanently embedded in the PDF. This prevents anyone from modifying the signed fields after completion, making the document tamper-proof.
Can I embed digital certificates in PDFs?
Yes. WPsigner can embed X.509 digital certificates into signed PDFs. These certificates are compatible with Adobe's Approved Trust List (AATL), meaning the signatures can be verified directly in Adobe Acrobat Reader without any additional software.
What is a Certificate of Completion?
A Certificate of Completion is an automatically generated PDF page appended to every signed document. It contains the complete audit trail, signer names, email addresses, IP addresses, timestamps, and the document's SHA-256 hash, providing a permanent record of the signing process.
Professional PDF Signing
Generate tamper-proof signed PDFs with digital certificates, audit trails, and flattening, all from your WordPress site.
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