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Advanced PDF Protect & Lock Tool

Military-grade PDF protection with password encryption, permissions control, and digital signatures. Secure your sensitive documents with advanced security features.

Why Choose Our Advanced PDF Protection?

Military-Grade Encryption

AES-256 encryption with multiple password protection levels for maximum security.

Advanced Permissions Control

Control printing, copying, editing, and annotation with granular permission settings.

Digital Signature Support

Add digital signatures and certificates for authentication and non-repudiation.

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Protection Settings
Standard Protection
Basic password protection for general use
AES-128 Encryption
Strong Protection
Enhanced security with permissions control
AES-192 Encryption
Military Grade
Maximum security with all restrictions
AES-256 Encryption
Security Options
Owner Password (Required)
Password strength: None
User Password (Optional)
Password strength: None
Allow Printing
Allow Copying
Allow Editing
Allow Annotations
Encryption Method
Document Assembly
Security Level: Standard
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PDF Protection Complete!

Successfully protected 0 pages with advanced security.

Security Level Applied

Unprotected
Original Status
→
Military Grade
Protected Status
AES-256
Encryption
5
Restrictions
100%
Security Score

Your PDF Is Now Secure!

Document has been encrypted with military-grade security. All selected protection features have been applied successfully.

Military Grade AES-256 5 Restrictions

Security Notes

  • Keep your passwords secure and never share them
  • Document can only be opened with the correct password
  • Selected restrictions are permanently enforced
  • Make a backup of your passwords in a secure location

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Unlock PDF Merge PDF Compress PDF Sign PDF Redact PDF PDF to Word Split PDF PDF to PDF/A Add Watermark PDF to Excel PDF to PowerPoint JPG to PDF
All processing done locally in your browser - no files uploaded to external servers.
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