Secure and open files

How it works

Securing happens locally in your browser using AES-256-GCM. Your file and passphrase never leave this device.

  • Nothing is uploaded; everything stays in your browser.
  • The result is a .secure file; share it separately from the passphrase.
  • To open, select the .secure file and enter the same passphrase.

View the source code on GitHub

1. Choose to secure or open a file

This page runs locally in your browser. It does not upload files anywhere.

2. Select a file to secure

3. Enter your passphrase

4. Secure