About Sign PDF
Four signature modes: Draw — freehand on canvas (mouse or touch); Type — rendered via ImageMagick in a script font; Upload — use your own PNG/JPEG image; PAdES / Crypto Only — invisible cryptographic signature using pyhanko (RSA-2048 / SHA-256, PAdES-compliant, verifiable in Adobe Reader). All modes support an optional embedded digital signature with your own .p12/.pfx certificate or an auto-generated self-signed one.
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Single PDF file • Max 50 MB