Protect PDF
Free online tool to protect pdf instantly in your browser.
Protect PDF
Add a strong password to your PDF to prevent unauthorized viewing.
Drop your PDF here
or click to browse from your computer
Encryption Settings
Free Online PDF Protector — Password Encrypt PDF Files
Protect PDF allows you to add military-grade AES encryption to your sensitive documents. Whether you are sending financial records to your accountant or sharing confidential legal agreements, adding a password ensures that only authorized individuals can view the contents.
Why Password Protect PDFs?
- Data Security: Stop unauthorized access. Even if someone intercepts your email or downloads the file from a shared drive, they cannot open the PDF without the password.
- Prevent Edits & Printing: Encryption not only locks the document from being viewed, but standard PDF encryption also prevents the file from being edited, copied, or printed by unauthorized parties.
How to Encrypt Your PDF
Simply upload your PDF document, type a strong, memorable password, and confirm it. Click the "Protect & Download" button. Our system will instantly generate a locked version of your file. Remember to share the password with your intended recipient through a secure, secondary channel (like a text message or phone call), rather than in the same email as the file itself.