About PDF Password Tool — Lock or Unlock Password-Protected PDFs
Check whether a PDF is password-protected and decrypt it directly in your browser by entering the password. The tool uses PDF.js to load and render the decrypted pages, then rebuilds a clean unlocked copy using pdf-lib. Also supports adding a metadata notice to indicate restricted access. Note: browser-side PDF encryption has limitations — full cryptographic password protection requires dedicated software.
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✨ Key Features of Our PDF Password Tool — Lock or Unlock Password-Protected PDFs
- ✓Detects encryption status
- ✓Client-side decryption with your password
- ✓Rebuilds clean unlocked PDF
- ✓Encryption detection badge
- ✓Permission flags display
- ✓100% browser-based
📖 How to Use PDF Password Tool — Lock or Unlock Password-Protected PDFs
1
Upload PDF
Drop the PDF file (encrypted or not).
2
Enter Password
If locked, enter the known password.
3
Unlock
Click Unlock and download the unprotected PDF.
❓ Frequently Asked Questions
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