Add password protection to your PDF using client-side encryption | the password and file are never sent to a server.
Upload the PDF you want to protect.
Set an open password, and optionally, permission restrictions.
Download your encrypted, password-protected PDF.
Entirely in your browser | your PDF and chosen password are never transmitted anywhere.
There's no recovery mechanism, since the password is never stored anywhere | keep it somewhere safe.
Yes, in addition to an open password, you can set permission restrictions like disabling printing or content copying.