Protect PDF Securely – 100% Browser-Based, Free & Unlimited
Secure your PDF files with military-grade 256-bit AES password encryption. Set permissions to prevent unauthorized printing, copying, or modifying of your document.
Drag & drop your PDF Files here
Why Choose Our PDF Protection?
Strong Password Encryption
Apply strong AES encryption to restrict unauthorized viewing, copying, or printing.
Secure Confidential Files
Lock payroll, contracts, and personal records with secret passwords before emailing.
100% Private & Local
Your files are processed entirely inside your browser. Nothing is ever uploaded to external servers.
Lightning Fast Speed
Zero waiting for file uploads or server queues—results are generated instantly on your machine.
Unlimited Free Use
Process as many PDF files as you need with no daily restrictions, caps, or hidden costs.
No Sign-Up Required
Get straight to work without creating an account, giving an email address, or logging in.
Clean & Watermark-Free
Your output PDFs remain 100% clean, professional, and free of any added branding.
How to Protect a PDF
- Select or drag and drop your PDF file into the tool.
- Enter a strong Document Password.
- (Optional) Enter a Permissions Password to restrict settings changes.
- Toggle permissions to allow or deny printing, modifying, or copying.
- Click Protect PDF and download your secured file.
Remember your password! Encrypted files cannot be recovered without it.
Perfect For
- Securing financial statements and invoices
- Protecting confidential legal contracts
- Preventing unauthorized printing of eBooks
- Stopping content scraping or copying
- Sending private medical records
- Distributing exclusive proprietary reports
Frequently Asked Questions
What happens if I forget the password I set?
Because your file is encrypted locally and we don't store your password, make sure to keep your password written down somewhere safe!
Can I set permissions to prevent printing while allowing viewing?
Yes! You can choose to lock printing or text copying permissions while still allowing users with the password to view the document.
Is the password protection compatible with Adobe Acrobat and phone PDF readers?
Yes, standard AES encryption is recognized universally across Adobe Acrobat, Apple Books, Chrome, and all major PDF readers.
Are my PDF files uploaded to any server?
No. All processing takes place entirely within your browser memory. Your confidential files never leave your device.
Is this tool free to use without limits or watermarks?
Yes! Our tools are 100% free to use with no account registration, hidden subscriptions, or added watermarks.
Secure your PDF files with military-grade 256-bit AES password encryption. Set permissions to prevent unauthorized printing, copying, or modifying of your document.