PAdES Cryptographic Signature — No Visible Image
Signs the PDF with an invisible PAdES-compliant digital signature using pyhanko. No image is drawn on the page — the signature is embedded in the PDF structure and is verifiable in Adobe Reader's Signatures panel (RSA-2048 / SHA-256). Configure your signer details and certificate in the Digital Signature section below.
- PAdES-B incremental signature (pyhanko)
- RSA-2048 with SHA-256 digest
- Invisible — no image drawn on the page
- Verifiable in Adobe Reader signature panel
- Auto self-signed cert or upload your own .p12 / .pfx
👁 Preview — signature overlaid on page 1 at selected position & size
Visual Overlay Only
This adds a visible image on the PDF. It is not a cryptographic digital signature and cannot verify authenticity or detect tampering. Enable the option below to also embed a cryptographic signature.
About Certificate Trust
A self-signed certificate provides tamper-evidence — Adobe Reader will show the signature is mathematically valid but mark the signer as unknown (no trusted CA). For legally binding signatures accepted by banks, courts, or regulated workflows, use a certificate issued by a trusted CA (e.g. DocuSign, GlobalSign, DigiCert).
Uploading…