Protect PDF
Encrypt your PDF files with a password online for free. Secure sensitive documents using AES encryption.
FreeNo signupFastSecure
Drop your file here or browse
Supports PDF • Up to 100 MB
Protection Options
Your passwords and files are strictly processed in-memory and automatically deleted after encryption.
About Protect PDF
Fileinator's Protect PDF tool securely encrypts your PDF files with military-grade 256-bit AES encryption. It allows you to strictly control what others can do with your document by setting granular permissions.
- Strong AES-256 encryption algorithm
- Set detailed permissions (Printing, Copying, Modifying)
- Instant, high-speed encryption process
- 100% free with top-tier browser security
- No watermarks, sign-ups, or hidden limits