AES-256 File Encryption — free, private, in your browser

Encrypt any file — not just PDFs — with AES-256 in your browser. Unlike iLovePDF or Smallpdf, nothing is uploaded: the processing happens on your own device, so the tool works even with the Wi-Fi off.

AES-256 File Encryption now — no sign-up →

How it works

  1. 1Drop any file onto the page
  2. 2Set a strong password
  3. 3Download the .enc file; decrypt it here later

Questions

Are my files uploaded?

No. CommandEditor runs entirely in your browser with WebAssembly — your file never leaves your device. You can verify it: open your browser's network inspector, or switch off Wi-Fi after the page loads; the tool still works.

Which algorithm?

AES-GCM 256-bit with PBKDF2 key derivation via the Web Crypto API — authenticated encryption, done locally.

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CommandEditor is open source and free forever. 114 tools, 60+ voice commands, on-device AI — your files never leave your device.