PDF Security
PDF Security tools protect a document or lift protection you're entitled to remove — add a password, remove one you already know, sign a document, permanently black out sensitive text, or lift owner restrictions on printing and copying. Everything runs in your browser; your file and password are never uploaded.
Tools in this category
Unlock PDF
Remove a known password from a PDF.
Protect PDF
Add a password to encrypt a PDF.
Sign PDF
Sign or request signatures.
Redact PDF
Permanently black out sensitive info.
Digital signature
Sign with a certificate.
Validate signature
Verify who signed and when.
Remove restrictions
Remove owner-password printing & copying limits.