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SwiftTools

PDF Password Protector

Free PDF password protection. Encrypt a PDF with a user password for opening and an owner password for permissions.

Encryption happens in your browser. The PDF and your password are never sent anywhere.

About PDF Password Protector

Add password protection to a PDF. Set a user password that is required to open the file, and optionally an owner password to control printing and copying.

How to use it

  1. 1Choose a PDF to protect.
  2. 2Set the user (open) password.
  3. 3Optionally set an owner password.
  4. 4Click Protect and download the secured file.

Examples

Basic lock

Input
doc.pdf + user password
Result
encrypted PDF

Owner control

Input
doc.pdf + user + owner passwords
Result
encrypted with permissions

Frequently asked questions

Is the encryption strong?

It uses a built-in hash-based scheme; use a strong, unique password for best security.

Can I remove the password later?

You would need the original password to alter the file.

Does it affect content?

No - only the access controls change.

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