Add password protection to any PDF instantly in your browser. Set open and permissions passwords, restrict printing, copying, and editing — all client-side.
✓ Free · No UploadAES-256 EncryptionOpen & Permissions Password100% Client-Side
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100% client-side — your PDF never leaves your device. Password encryption happens entirely in your browser using pdf-lib.
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🔑 Password
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Open Password (Required to open)
Enter a password above
Owner / Permissions Password (Optional)
Required to change permissions. If blank, same as open password.
🛡️ Permissions
Restrict actions (requires owner password to override)