PDF ToolsFiles never leave this device

Protect PDF

Add a password to a PDF, or remove a password you know.

Details and questions

Features

  • Add a password required to open the file
  • Remove protection by entering the current password
  • Encryption happens locally, the password is never sent

How to use

  1. Add one PDF.
  2. Choose add or remove password and enter the required passwords.
  3. Download the encrypted or unlocked file; the password never leaves this browser.

Questions

Is my PDF uploaded?

No. Files are processed entirely in your browser with local technology and are never sent to a server.

Is there a file size or usage limit?

There is no account and no quota; the practical limit is the memory of this device.

Is the processed file identical to the original?

Merge, split, rotate and password operations keep page content intact; compression is a lossy re-render and reduces quality according to the chosen level.

What is PDF Tools?

PDF Tools is a set of local PDF tools — merge, split, page management, passwords, image export, watermarks, compression and form filling — usable offline.