Upload PDF File
Drag and drop your PDF file here or click to select
Supports: PDF files • Password protection with AES-256 encryption
Password Settings
Minimum 4 characters
Privacy First
All PDF encryption happens locally in your browser. Your files and passwords are never uploaded to any server.
About PDF Password Protection
Free Online PDF Encryption Tool
Protect your PDF documents with strong password encryption online for free. Add user and owner passwords to prevent unauthorized access, copying, and modifications. Uses industry-standard AES-256 encryption to keep your documents secure.
Key Features
🔒 Strong Encryption
- AES-256 encryption standard
- Password-protected access
- Prevents unauthorized viewing
- Secure document sharing
- Industry-grade security
🛡️ Permission Control
- Disable content copying
- Prevent modifications
- Block form filling
- Restrict annotations
- Control printing access
⚡ Easy to Use
- Simple drag and drop
- No registration needed
- Instant encryption
- One-click download
- Works in browser
🔐 Privacy Protected
- 100% client-side processing
- No server upload
- Files stay on your device
- Passwords never stored
- Completely free
How to Protect PDF with Password
- Upload PDF: Click "Choose PDF" or drag and drop your PDF file into the upload area.
- Enter Password: Type a strong password (minimum 4 characters) in the User Password field.
- Optional Owner Password: Enable "Set different owner password" if you want separate permissions control.
- Protect: Click "Protect PDF" button to encrypt your document with the password.
- Download: Download your password-protected PDF. Anyone opening it will need the password.
Password Types Explained
👤 User Password
Required to open and view the PDF. Anyone with this password can read the document but cannot copy content or make changes.
👑 Owner Password (Optional)
Allows full control over the PDF, including changing permissions and security settings. If not set separately, the user password is used as the owner password.
Perfect For
- Confidential documents
- Financial reports
- Legal contracts
- Medical records
- Personal information
- Business proposals
- Tax documents
- HR records
- Client data
- Intellectual property
- Sensitive communications
- Private documents
🔒 Your Privacy is Protected
All PDF encryption is performed entirely in your web browser using client-side JavaScript. Your PDF files and passwords are never uploaded to our servers or any third party. This ensures your documents remain completely private and secure. Remember to keep your password safe - if you lose it, the PDF cannot be recovered.