Add password protection and AES-256 encryption to secure your PDF documents
Drag & drop files here
or click to browse from your computer
Our Password Protect PDF tool secures your PDF documents with military-grade AES-256 encryption and password protection. You can set both a user password (required to open the document) and an owner password (controls permissions like printing, editing, and copying). The tool allows you to customize permission settings, restricting what users can do with your document even if they have the password. All content, formatting, and quality are preserved while adding strong security. The encryption standard used is the same as banks and government agencies, ensuring maximum protection for sensitive documents. All processing happens securely in your browser, and the tool is completely free with no watermarks, no file size limits, and no signup required. Perfect for protecting confidential documents, financial information, or any sensitive files you need to share securely.
Your privacy and security are our top priorities. All Password Protect PDF processing is designed with security-first principles.
Learn how to add password protection to PDF files in just 2 minutes. See real examples and get started securing your documents today.
Video Tutorial
Click to play
Your PDF will be secured with military-grade AES-256 encryption, the same standard used by banks and government agencies. Only users with the correct password can open the document.
Protect sensitive documents with confidential information
Secure financial documents and invoices
Add password to personal documents for privacy
Restrict editing and copying of official documents
Upload your document
Upload your PDF file using drag and drop or click to browse. Files up to 100MB are supported for secure protection.
Set password and permissions
Choose a strong password and configure permission settings (printing, editing, copying) to control document access.
Encrypt document
Our tool applies AES-256 encryption to your document, the same military-grade standard used by banks and government agencies.
Download protected file
Download your password-protected PDF file instantly. Your document is now secured with encryption and password protection.
Password Protection
Prevent unauthorized access
Permission Control
Control printing, copying, editing
AES-256 Encryption
Military-grade security
Batch Protection
Protect multiple files at once
Use at least 12 characters for strong security
Mix uppercase, lowercase, numbers, and symbols
Avoid common words or personal information
Store passwords securely (use a password manager)
Important
If you forget the password, there is NO way to recover the PDF. Make sure to store your password in a safe place!
Fast Processing
Convert files in seconds
100% Secure
All processing is client-side
High Quality
Maintains original quality
No Limits
Process unlimited files
Upload your PDF file, set a strong password (and optional owner password for permissions), choose permission settings, and click "Process Files" to create a password-protected PDF.
User password opens the document, while owner password controls permissions (printing, editing, copying). You can set both for maximum security.
Yes, adding password protection to PDFs is completely free with no watermarks, no registration required, and no file size limits.
We use AES-256 encryption, which is the same standard used by banks and governments for maximum security.
Yes, you can restrict printing, editing, copying, and other permissions even if someone has the user password, by setting an owner password.
Password recovery may not be possible due to strong encryption. Always store passwords securely and consider using a password manager.
No, password protection doesn't affect document quality, content, or formatting. Only access restrictions are added.