Create Tools

Create PDF Scan to PDF Electronic Invoice

Office Tools

Word to PDF PDF to Word Excel to PDF PPT to PDF

Manage Tools

Merge PDF Split PDF Compress PDF Rotate PDF Remove Pages Extract Pages Rearrange Pages Repair PDF

Security Tools

Protect PDF Unlock PDF

Edit Tools

Edit PDF Sign PDF Annotate PDF Redact PDF Add Watermark Add Page Numbers Crop PDF

Advanced Tools

PDF OCR Extract Images Compare PDFs PDF Reader

Advanced PDF Protect & Lock Tool

Protect your PDF with real AES-256 password encryption and granular permissions control. 100% client-side — your files never leave your browser.

Why Choose Our Advanced PDF Protection?

Real AES-256 Encryption

Actual PDF encryption written into the file — enforced by Adobe Reader, Chrome, and all standard PDF viewers.

Granular Permissions

Control printing, copying, editing, and annotations independently with real PDF permission flags.

100% Private

Everything runs in your browser. Zero file uploads to any server. Instant results.

Continue to Other Tools

Unlock PDF Compress PDF Merge PDF PDF to Word Split PDF Sign PDF Organize PDF PDF to PDF/A Add Watermark PDF to Excel PDF to PPT JPG to PDF
Protection Settings
Standard Protection
Basic password for general use
AES-128Encryption
Strong Protection
Enhanced security with permissions
AES-256Encryption
Military Grade
Maximum security, all restrictions
AES-256+ All Locked
Password Settings
Password strength: None
Password strength: None
Permissions
Allow Printing
Allow Copying
Allow Editing
Allow Annotations
Encryption
Estimated time: ~5 seconds
PDF Pages Preview (Click to select, Double-click to preview)
Grid Size:
Preview Mode:
Zoom:

No PDF loaded. Select a file to preview pages.

of 1
Page 1 of 0

PDF Protection Complete!

Successfully protected 0 pages with advanced encryption.

Protection Applied

AES-256
Encryption
0
Restrictions
100%
Security Score

Security Notes

  • Keep your owner password in a safe place
  • The selected restrictions are enforced by all standard PDF viewers
  • File was processed entirely in your browser — not uploaded anywhere

Your PDF Is Now Secure!

All selected protection features have been applied. The file is encrypted and ready to share securely.

Standard AES-256 0 Restrictions

Continue to Other Tools

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 PPT JPG to PDF
All processing done locally in your browser - no files uploaded to external servers.
0 pages selected