PDF Tool
Protect PDF Online Free
Add a basic password marker to your PDF file.
How It Works
- Upload your PDF document.
- Click Process File.
- Enter a password to set when prompted.
- Download your protected PDF.
About This Tool
DocProTools marks and re-saves your PDF with the password you choose noted on the document. Full client-side AES encryption is on our roadmap; for fully encrypted PDFs today, use a desktop PDF editor's password feature as well.
Keep a copy of your password somewhere safe, since lost PDF passwords generally cannot be recovered.