Exclusive PRO Feature
Upgrade to Use Secure PDF
Secure PDF is a Pro feature with 256-bit AES encryption, custom permissions, and redaction. Subscribe to get unlimited access.
About Secure PDF Online
Protect your PDF files with military-grade 256-bit AES encryption. Add passwords, restrict printing/copying, and add secure watermarks.
How to Use Online in 3 Simple Steps
1
Select and upload the PDF file you wish to protect.
2
Configure your master password, user password, and printing or copying permissions.
3
Apply security and download your encrypted PDF file.
Zero permanent storage: All uploads and results are permanently destroyed from our servers after 1 hour.
Privacy Guarantee →Frequently Asked Questions
Common Questions about this Tool
What encryption standard is used?↓
We apply industry-standard 256-bit AES encryption compatible with all major PDF readers.
Can the password be recovered if I lose it?↓
Because encryption is cryptographic, passwords cannot be recovered once applied. Please record your password safely.