Protect PDF Online – Add Password & Encrypt PDF Free
Upload a single PDF or upload a ZIP containing PDFs. Each PDF will be protected with the password you provide.
How to Use the Protect PDF Online – Add Password & Encrypt PDF Free
Upload PDF
Select and upload the PDF file you wish to lock with password protection.
Set Password
Type a strong, secure password in the input field to encrypt your file.
Encrypt & Save
Click "Protect PDF" and download your newly password-secured PDF document.
Frequently Asked Questions
What kind of encryption is used for PDF protection?
We apply standardized PDF security encryption algorithms to ensure your document can only be unlocked with the exact password you define, preventing unauthorized printing or editing.
Will my original PDF contents be modified?
No, the structure, layout, and visual contents of your file remain untouched. We only wrap the document in a secure encryption layer.
What happens if I forget the password?
For security and privacy reasons, we do not store passwords or document contents on our servers. Make sure to remember your password, as we cannot recover it for you.