Protect PDF
Encrypt your PDF with strong AES encryption and a secure password.
Free • No Sign-up
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100% Client-Side
Processed in browser memory. Files are never sent to remote servers.
Zero Server Storage
No cloud disks or database logs. Data is discarded upon session end.
Free • No Sign-up
No accounts, credit cards, or watermarks. Instant unrestricted use.
Ultra-Fast Execution
Powered by WebAssembly for instant processing without upload queues.
How to Use - Protect PDF
1
Upload the PDF document you want to secure
2
Enter a strong password of your choice
3
Download the encrypted and protected PDF
Frequently Asked Questions
Protect PDF