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PDF Password Protector – Encrypt & Lock PDF

4.8
(215 votes)

Add AES-128 password protection to any PDF. Control printing, copying, editing permissions. 100% client-side.

Drop your PDF here

Add password protection · Set permissions · Choose encryption strength
100% private — never uploaded to any server

What you can control
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AES-128 Encryption

Industry-standard encryption supported by all modern PDF viewers

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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

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Control Annotations

Allow or block users from adding comments and highlights

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Form Permissions

Allow form filling without allowing other modifications

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Strength Meter

Real-time password analysis with improvement suggestions