Secure PDF
Encrypt or Decrypt your documents locally.
Set Password
Add a password to your PDF.
Drag files or click to upload
Remove Password
Unlock a secured PDF.
Drag files or click to upload
Secure PDF - Lock & Unlock PDF Files Locally
Easily add password protection to your PDFs or remove existing passwords. All processing happens safely on your device.
Why choose PDF Miracle?
- Remove passwords to unlock PDFs
- Secure AES-256 Encryption for strong protection
- Full privacy: No files are ever uploaded
- Works instantly on any device
- Simple and free for everyone
100% Private & Secure
Unlike other online tools, we process your files locally in your browser using WebAssembly. Your documents are never uploaded to any server, ensuring military-grade privacy for your sensitive data.
How to Password Protect a PDF
1
Open Tool
Upload the PDF you wish to secure.
2
Set Password
Enter a strong password in the 'Set Password' field.
3
Encrypt
Click 'Start Encryption' to lock the file immediately. You can now download the protected version.