Protect PDF Files

Add password protection to your PDF files! Keep your documents secure with AES-256 encryption.

✓ 100% Free✓ Secure & Private✓ No Files Stored

Drop your PDF file here

or click to browse

Maximum file size: 50MB

How to Protect PDF Files

1

Upload Your PDF

Click the upload area or drag and drop your PDF file. Maximum file size is 50MB.

2

Enter Password

Enter a strong password (minimum 3 characters). This password will be required to open the PDF file.

3

Protect & Download

Click "Protect PDF" to encrypt your file with AES-256 encryption. Once complete, download your password-protected PDF. Your original file is never stored on our servers.

Security Features

  • AES-256 Encryption: Industry-standard encryption for maximum security
  • No File Storage: Your PDF is processed in memory and never saved to disk
  • Secure Processing: All processing happens server-side with no client-side exposure
  • Privacy Protected: Files are deleted immediately after processing

Discover more free pdf tool tools to help you with your tasks. All tools are 100% free, secure, and easy to use.

All tools are free forever! No registration required. Use them as much as you need.