Protect PDF Files With Bank-Grade Encryption
Add strict password security to your PDFs and fully control who can open your sensitive documents
Strong encryption • Prevent copying • Instant lock
How It Works
Three simple steps to get your file
Upload PDFs
Add up to 5 PDF files
Set Passwords
Use common or individual passwords
Export & share
Get your encrypted PDFs
Initializing...
Why choose our PDF protection tool?
From vulnerable documents to bank-grade security instantly.
Advanced PDF protection with encryption
Secure your documents with military-grade encryption and password protection.
Military-grade encryption
Protect your PDFs with AES-256 encryption, the same standard used by governments and banks.
Protection options
Flexible security levels
Password management
One password or individual
Everything preserved
Content · Layout · Images · Text · Metadata
Instant protection
Encrypt multiple PDFs in seconds with no quality loss.
No preview access
Files never leave device
Permission controls
Print, copy, edit limits
Batch processing
Up to 5 PDFs at once
Your files are in safe hands
Files are processed securely and never stored or shared.
"We process your work in isolated environments. We never access, analyze, or share your content."
No account required
Start using immediately, zero friction
No file sharing
Your content stays 100% yours
Auto deleted in 5 hours
Files wiped from our servers
Frequently Asked Questions
Everything you need to know about trimming videos online
How do I add a password to protect a PDF file online?
- Simply upload your document to our free online PDF protector. Type in a strong password, choose your specific security permissions, and click encrypt. Your locked PDF will be instantly ready to download and securely share via email.
How do I prevent people from copying, editing, or printing my PDF?
- Our tool gives you granular control over document permissions. You can set an "owner password" to restrict specific actions. This allows you to lock the file so viewers can read it, but cannot print the document, copy the text, or make any edits.
Is the PDF encryption strong enough for financial and legal documents?
- Yes. We use advanced AES-256 encryption. This is the exact same military-grade security standard used by banks, governments, and enterprise corporations to lock down highly sensitive and confidential information.
Can I password protect multiple PDF files at once?
- Yes, our tool supports batch encryption. You can upload up to 5 PDF files (up to 100MB each) at the same time. You can choose to apply one master password to all the documents, or set a unique, individual password for each specific file.
Do I need to download Adobe Acrobat to lock a PDF?
- No expensive software or app installation is required. Our PDF encryptor works entirely in your web browser. You can securely lock and password-protect documents directly from your Mac, Windows PC, iPhone, or Android device.
Will encrypting or locking the PDF mess up the formatting?
- Not at all. Adding password protection only alters the security layer of the file. Your document’s content, layout, images, and text quality will remain exactly the same as the original.
Is it safe to upload highly sensitive documents to add a password?
- Absolutely. We treat your privacy with the utmost strictness. Your files are encrypted securely in your browser and are automatically and permanently wiped from our servers within 5 hours. We never store, read, or have any access to your passwords or documents.