Security & Signing

Protect, unlock, sanitize and digitally sign documents.

Encrypt a PDF with a password and control printing, copying and editing permissions.

Remove password protection from a PDF when you know the password.

Strip metadata, JavaScript, embedded files and optionally annotations and links before sharing.

Automatically find Aadhaar and PAN numbers in a PDF and black them out, keeping the last 4 digits if you like.

Apply a certificate-based digital signature (PKCS#7) using your own .p12/.pfx certificate, privately in your browser.

Check whether digital signatures in a PDF are intact and inspect the signing certificates.

Check PDF structure, encryption, fonts and page tree for problems.

Rebuild the internal structure of a damaged PDF so it opens reliably.