About Protect PDF with Password
Protect PDF with Password is a free online tool that encrypts your PDF files with AES-256-GCM encryption and PBKDF2 key derivation. WayPDF processes encryption entirely in your browser using the Web Crypto API — your password and document never leave your device.
Note: WayPDF uses a custom encryption format (not standard Adobe Reader PDF passwords). To decrypt, use WayPDF's Unlock PDF tool with the same password. Common uses include encrypting financial statements, legal agreements, HR documents, medical records, and confidential business proposals before sharing via email or cloud storage.
Browser-based encryption ensures your sensitive data is secured on your own device before any potential transmission. The Web Crypto API provides hardware-accelerated cryptography for strong, fast protection.
Why choose WayPDF
AES-256-GCM encryption
Industry-standard cryptography with PBKDF2 key derivation.
Browser-native security
Encryption uses the Web Crypto API built into your browser.
Complete privacy
Your password and document never leave your device.
Fast processing
Encryption happens instantly using native browser APIs.
Works on all devices
Compatible with all modern browsers that support Web Crypto.
No registration
Start using the tool immediately. No account or sign-up required.