PDF Password Protector – Encrypt & Lock PDF
Fortify your documents natively with AES-128 encryption. Assign strict passwords to seamlessly block unauthorized viewing, printing, or structural editing.
Fortify your documents natively with AES-128 encryption. Assign strict passwords to seamlessly block unauthorized viewing, printing, or structural editing.
Drop your PDF here
Add password protection · Set permissions · Choose encryption strength
100% private - never uploaded to any server
AES-128 Encryption
Industry-standard encryption supported by all modern PDF viewers
Dual Password System
Separate user password (open) and owner password (admin control)
Block Copying
Prevent users from copying text or images from the PDF
Restrict Printing
Disable printing entirely or limit to low-resolution only
Lock Editing
Prevent document modifications, page insertions or deletions
Control Annotations
Allow or block users from adding comments and highlights
Form Permissions
Allow form filling without allowing other modifications
Strength Meter
Real-time password analysis with improvement suggestions
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How to Use PDF Password Protector – Encrypt & Lock PDF
Follow these simple steps to get results in seconds - no account, no downloads, no fuss.
Import Unsecured PDF
Choose the PDF file you wish to lock down.
Configure Passwords
Define an open/user password. Optionally, toggle owner restrictions like disallowing printing or unauthorized modifications.
Encrypt Document
Execute the encryption protocol to wrap your document in highly secure cryptography before downloading.
100% Browser-Based Utility
No installation required. Works seamlessly on all mobile & desktop devices.
Frequently Asked Questions
Everything you need to know about PDF Password Protector – Encrypt & Lock PDF. Can't find your answer? All questions are answered in detail below.
Your file is wrapped via standard 128-bit encryption architectures, securely defending against unauthorized brute force viewing.
A 'User' password completely blocks the file from opening. An 'Owner' password allows opening but enforces strict read-only permissions preventing editing, copying, or printing.
Yes, provided you retain the owner or user key. You can decrypt it later using our PDF Unlocker mechanism.
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