PDFProtect
Private browser-based PDF security

Protect PDF files in your browser.

Add open passwords, owner restrictions, and permissions-only protection directly in your browser. Unlock and re-save PDFs locally with no uploads or server processing.

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Drop a PDF here

or click to browse files

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Open Password Required
Open Password
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Owner Password Protected
Owner Password

This PDF is readable but has an owner password that restricts modifications. Enter the owner password to add or change protection settings.

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Set Passwords

Set a user password to require opening credentials, or leave it blank and use only an owner password for permissions-only protection.

Encryption algorithm

AES-256 — industry-standard encryption used for all protected PDFs.

Permissions

Permissions depend on viewer support and are best-effort restrictions. Some PDF viewers may still allow text selection, copying, or other actions.