Sign PDF Documents Electronically & Digitally

Draw signatures, type cursive names, upload signature images, or apply cryptographic digital certificates.

How to Sign a PDF Document

  1. Select your PDF: Open the document requiring your signature.
  2. Create or choose your signature: Draw your signature, type with custom cursive typography, upload a signature image, or select a digital certificate.
  3. Place and sign: Position your signature onto the document and export your legally signed PDF.

Why this tool

  • Cryptographic Digital Certificates (PKCS#12 / PFX): Sign with your own X.509 certificate or trusted Paprkit certificate for tamper-evident digital signatures.
  • Multiple Signature Modes: Draw freehand with smooth smoothing, type cursive fonts, upload PNG signatures, or place initials.
  • Device-Level Security: Your private keys and password never leave your machine when using your own P12 certificate.

Frequently asked questions

What is the difference between an electronic signature and a digital certificate signature?

An electronic signature is a visual mark (drawn, typed, or image) placed on the document. A digital certificate signature uses cryptographic hashing (X.509 / PKCS#12) to seal the document, verifying the signer identity and guaranteeing the content has not been tampered with.

Can I use my own .p12 or .pfx certificate?

Yes, Paprkit supports signing with your own private PKCS#12 certificate file and passphrase directly on your computer.