Protect PDF
WebAssembly Security Module Active • AES-128 Encryption
Click or drag PDF here
Upload a PDF to password protect it (Max 100MB)
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Upload a PDF to add password protection
Security Features
Encryption
AES-128
Password Strength
—
Protection
User + Owner
Standard
PDF 2.0
Password Tips:
- Use at least 8 characters
- Mix uppercase, lowercase, numbers, symbols
- Avoid common words or personal info
- Save your password - it cannot be recovered
How it works:
1. PDF loaded in-browser
2. Password hashed with AES-128 via pdf-lib
3. Encryption applied to all content
4. Permissions embedded in document
5. Protected PDF ready for download
1. PDF loaded in-browser
2. Password hashed with AES-128 via pdf-lib
3. Encryption applied to all content
4. Permissions embedded in document
5. Protected PDF ready for download