Protecting PDFs in Acrobat: Open Passwords vs Permission Passwords

Quick answer: Acrobat's Protect sets two different things: an open password (the file cannot be opened without it — real security) and a permission password (restricts printing/editing/copying — a weak, often-bypassable hint). DocsAll's PDF Encrypt covers open-password protection for free. Open PDF Encrypt — everything runs locally in your browser, and files never leave your device.

Steps

1. Acrobat: tool center → Protect → encryption settings (modern versions default to AES-256).
2. DocsAll: upload to PDF Encrypt, set the open password — local processing.
3. Share the password through a different channel than the file itself.
4. Lost password = unrecoverable: encryption has no back door.

Important notes

• Permission passwords are honored voluntarily by viewers — several tools ignore them; treat them as deterrence.
• Encryption does not stop screenshots, and it does not remove sensitive text from the layer — redact first, then encrypt.

Common questions

Does encrypting grow the file? Slightly — the document structure is rewritten during encryption.

Is the permission password secure? No — it is a request, not a barrier; rely on the open password for confidentiality.