PDF Protect
Adding a password means a PDF can only be opened by someone who knows it. This tool encrypts your PDF with a password of your choice, entirely in your browser, so neither the file nor the password is ever sent anywhere.
How to Use This Tool
- Choose a PDF file (it must not already be password-protected).
- Type the password you want required to open it.
- Click Protect PDF and download the encrypted file.
Why Use ToolVigo's PDF Protect
- Standard PDF password encryption, openable by any PDF reader that asks for a password.
- Password and file never leave your browser.
- Clear reminder that a lost password cannot be recovered.
Limitations
Uses 40-bit RC4 encryption, which is universally compatible but not strong by modern standards. For highly sensitive documents, consider a stronger, dedicated encryption tool.
Privacy & Security
This tool runs entirely in your browser using a PDF engine built for ToolVigo. Your PDF is never uploaded to our servers — opening, editing and saving all happen on your device.
Frequently Asked Questions
What encryption does this use?
It uses the PDF standard security handler with RC4 40-bit encryption (PDF 1.1-compatible), which every PDF reader supports. This is adequate for keeping casual or accidental access out, but is not considered strong by modern cryptographic standards — don't rely on it alone for highly sensitive documents.
What if I forget the password?
It cannot be recovered or reset by ToolVigo — we never see or store it. Keep a copy of the password somewhere safe.
Can I remove the password later?
Yes, using the PDF Unlock tool, as long as you know the password.
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