Protect PDF Files — AES-256 Encryption
Secure your PDF documents with strong passwords. Encryption happens locally in your browser for maximum privacy.
Select PDF Document
Click or drag to upload the file you want to protect
Only you will know this password.
No Password
Your Privacy is Our Priority
Unlike other online tools, PDFaiGen processes your files directly in your browser. No file uploads, no server data breaches.
Zero Uploads
Files never leave your device. All processing happens locally in your browser memory.
End-to-End Private
Since no data is sent to any server, your sensitive documents remain completely private.
Works Offline
Once loaded, our tools work without an internet connection. No data usage required.
How It Works
Simple, fast, and secure. Get your file processed in 3 easy steps.
Upload Document
Select the PDF file you wish to protect with a password.
Set Password
Enter a strong password. This will be required to open the file.
Encrypt & Download
We encrypt the file locally using AES-256. Download it instantly.
Key Features
Why Choose PDFaiGen?
We are building the future of document processing — focusing on privacy, speed, and design.
100% Privacy Guaranteed
No cloud uploads. Your files are processed entirely on your device using WebAssembly technology.
Lightning Fast
Zero upload time. Zero download time. Instant processing powered by your own hardware.
Easy to Use
Simple drag-and-drop interfaces designed for efficiency. No accounts or sign-ups required.
Common Use Cases
See how others are using this tool to save time and improve workflows.
Financial Statements
Secure bank statements and tax returns before sharing them.
Legal Contracts
Ensure only authorized parties can view sensitive legal agreements.
Personal ID
Protect scans of passports, IDs, and social security documents.
Employee Records
Secure HR documents containing personal employee information.
Medical Reports
Comply with privacy regulations by encrypting patient data.
Confidential Project Data
Protect proprietary business information and trade secrets.
Complete Guide: How to Password Protect PDF Files
Securing sensitive documents with password protection ensures only authorized individuals can view or edit your PDFs. Our tool encrypts your files locally, adding both user passwords (for opening) and owner passwords (for editing permissions).
Upload Your PDF Document
Select the PDF file you want to protect. The file is processed entirely in your browser—no uploads to any server.
Set User Password (Optional)
Enter a password required to open the PDF. Anyone without this password won't be able to view the document content.
Set Owner Password (Optional)
Enter an owner password to restrict editing, printing, or copying. This allows viewing but prevents modifications.
Configure Permissions
Choose which actions to allow: printing, copying text, modifying content, or adding annotations. These restrictions are enforced by the owner password.
Encrypt and Download
Click 'Protect PDF' to encrypt the document. Download your password-protected file and share it securely.
Pro Tips
- Use strong passwords with a mix of letters, numbers, and symbols.
- Store passwords securely—if you lose them, the PDF cannot be recovered.
- For maximum security, set both user and owner passwords.
Common Issues
Forgot the password?
Unfortunately, if you lose the password, the PDF cannot be decrypted. Always keep a backup of your passwords in a secure password manager.
Permissions not working?
Ensure you've set an owner password. Permissions are only enforced when an owner password is present.
Why We are Better
See how PDFaiGen compares to traditional online PDF tools.
Secure Your PDFs Today
Don't risk your data security. Protect your important documents with bank-level encryption instantly.
No credit card required • No installation • 100% Private