PDF tools

Password Protect PDF

Require a password to open your PDF, with AES-256 encryption.

Choose a PDF to protect

Drag a file here or choose one from your device.

Maximum 25 MB · Encrypted in your browser

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Set the password

Password to open PDF

Confirm password

Use a long, unique password. We cannot recover a forgotten password.

Additional options

Current password (if your PDF is already protected)

Owner password (optional)

If blank, a random owner password is generated and not retained. Enter one if you want to manage permissions later.

Allow printing Allow copying text Allow editing

Viewer permissions are advisory and may not be enforced by every PDF app.

The result is ready to download after encryption finishes.

About PDF protection

The password is used locally to encrypt your PDF. Your pages, selectable text, and links are preserved. Share the password separately from the PDF. A strong password helps protect the file; printing and editing controls depend on the PDF reader.