PDF Password Protector

Add password protection to your PDF documents with military-grade encryption. Set separate passwords for opening and editing, control permissions like printing, copying, and modifying. Choose between 128-bit or 256-bit AES encryption for maximum security. Perfect for protecting confidential documents, financial reports, or personal information. All encryption happens locally in your browser.
128/256-bit Encryption Permission Settings Dual Passwords AES Security
Supported Formats
open Password to open PDF
edit Password to edit PDF
permissions Restrict printing, copying
Drag & Drop Ready
Upload PDF

Drag and drop your PDF here or

Your file never leaves your browser

Password Settings
Anyone opening the PDF will need this password
Controls editing permissions. If empty, uses the user password.
Note: Due to browser limitations, the protected PDF will be a new document with the same content. Some interactive features may not be preserved.
Important: Remember your passwords! There is no way to recover a forgotten password from an encrypted PDF.
PDF Preview

Upload a PDF file to add password protection

Help & Related Tools

Everything you need to know

FAQ Frequently Asked Questions

What security features does the PDF Password Protector offer?
This tool provides comprehensive PDF security with two password types: User Password (to open) and Owner Password (to modify). Features include 128-bit or 256-bit AES encryption, granular permissions control (print, copy, modify, annotate), and metadata protection. You can set different passwords for viewing and editing, ensuring complete document control.
How do I password protect my PDF file?
Simply upload your PDF, enter a strong password for opening the document, and optionally set an owner password for edit permissions. Choose your encryption strength (256-bit recommended) and select which actions to allow or restrict. Click "Protect PDF" and download your secured file. The tool shows password strength indicators to help you create secure passwords.
Is the protected PDF compatible with all PDF readers?
Yes, password-protected PDFs created with this tool work with all standard PDF readers including Adobe Acrobat, Chrome, Firefox, Edge, and mobile PDF apps. The encryption standards used (AES-128/256) are industry-standard and universally supported. Recipients only need the password to open - no special software required.
How secure is the password protection and encryption?
The tool uses military-grade AES encryption (128-bit or 256-bit) which is virtually unbreakable with current technology. All encryption happens locally in your browser - your file and passwords never leave your device. For maximum security, use strong passwords with mixed characters, and never share passwords through insecure channels.
Can I set different permissions for different users?
Yes! Use the two-password system: set a User Password for people who should only view the document, and an Owner Password for those who need full control. You can restrict specific actions like printing, copying text, or modifying the document. Anyone with the owner password bypasses all restrictions, while user password holders respect the set permissions.

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