P.ProFlow Tools

Protect PDF with a password

Lock a PDF so it asks for a password before it opens. You can also stop people printing it.

● Processed in your browser. Your files are never uploaded.
Secure & privateData processed securely in your browser. We never store, log or share your financial or medical records.

How to use

  1. Choose the PDF to protect.
  2. Type a password twice and choose whether printing is allowed.
  3. Click Protect PDF and download the locked copy.

Frequently asked questions

Are my files uploaded to a server?

No. This tool runs entirely in your web browser. Your files never leave your device, which makes it safe for private documents.

How strong is the protection?

It uses the standard PDF password that every PDF reader understands, which keeps casual readers out. It is not strong encryption, so for highly sensitive files use software with AES-256 encryption.

What if I forget the password?

It cannot be recovered. Keep your original, unprotected file somewhere safe.

Will the text still be selectable?

No. Pages are saved as high-quality images in the protected copy.