PDF tool

Protect PDF

Lock a PDF with a password so only people you choose can open it.

100% local — files never leave your deviceProcessed in your browser

How it works

Upload the PDF you want to protect.
Enter the same password twice.
Protect and download the encrypted file.

Good to know

The PDF is encrypted with the standard RC4/AES handler supported by mainstream viewers — anyone opening it will need the password.
Losing the password means losing access. There is no recovery.
Every step runs locally in your browser using Web Workers — your file is never uploaded to any server.