PDF Protection
Password protect your PDF files with custom permissions. Secure, private, and completely free.
Add owner and user passwords to control who can open and modify your PDF. All processing happens locally in your browser - your files never leave your device.
Upload PDF File
Drag and drop your PDF here or click to browse
Maximum file size: 100MB
How It Works
Simple 4-step process to protect your PDF
Upload PDF
Select the PDF file you want to protect
Set Passwords
Enter owner and user passwords for protection
Configure Permissions
Choose what users can do with the protected PDF
Download
Download your password-protected PDF
Why Use Our PDF Protection Tool?
Professional PDF protection with privacy and security
Complete Privacy
All processing happens in your browser. Your files and passwords are never uploaded to any server.
Strong Encryption
Uses industry-standard encryption to protect your PDF documents from unauthorized access.
Custom Permissions
Control exactly what users can do - print, copy, modify, or annotate your protected PDFs.
Two Password Types
Set an owner password for full control and a user password for opening the document.
Instant Processing
Protect your PDFs in seconds with no need to wait for file uploads or downloads.
Free to Use
No registration, no limits, completely free forever.
Supported Formats
Protect PDF documents with password encryption
Upload a PDF document (up to 100MB)
PDF (Encrypted)
Download password-protected PDF document
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Frequently Asked Questions
Is my PDF file and password safe when using this tool?
Yes, absolutely. All processing happens locally in your browser using JavaScript. Your files and passwords are never uploaded to any server, ensuring complete privacy and security.
What is the difference between owner and user password?
The owner password gives full control over the PDF, including the ability to change permissions. The user password is required to open the document. If you only set an owner password, anyone can open the PDF but with restricted permissions.
Can I remove the password later?
If you know the owner password, you can use a PDF unlock tool to remove the protection. Make sure to remember your passwords as they cannot be recovered.
What permissions can I control?
You can control whether users can print, modify the document, copy content, add annotations, fill forms, extract content for accessibility, and assemble the document.
How strong is the encryption?
Our tool uses industry-standard encryption (AES-128) which provides strong protection for most use cases. For highly sensitive documents, consider using specialized encryption software.