Keep your emails, SMS, WhatsApp and other messages private.
File
No file selected
If a file is selected, text mode is disabled. Files encrypt/decrypt as a .qenc download.
0/50000
Text format uses a version prefix like QA1:.
Recommended: 6+ random words. Share the passphrase out-of-band (in person/voice).
Ready.
About Unreadable

Unreadable lets you encrypt text and files directly in your browser using a shared passphrase. The encrypted result can then be sent over WhatsApp, SMS, email, or any chat app.

Nothing is uploaded or stored. Encryption and decryption happen entirely on your device.

Encryption uses standard browser cryptography (PBKDF2 and AES-GCM) via the Web Crypto API.

Theme
Terminal theme uses a dark background with green accents and monospaced encrypted output.
User Guide
  • All encryption and decryption happens on your device. Nothing is uploaded or stored.
  • Once loaded, this app will continue to work offline.
  • Messages and files are encrypted using a passphrase you choose.
  • Only someone with the correct passphrase can decrypt the message or file.
  • Use a passphrase with at least 6 random words (or a strong password).
  • Consider using a different passphrase for different contacts.
  • Keep passphrases secure (e.g. a password manager, written down safely, or memorised).
  • This tool secures message contents, but does not hide who you are communicating with or when.
  • When sharing encrypted text, copy and paste it directly between chats. Pasting into other apps may alter the text and cause decryption to fail.
  • If decryption fails, the passphrase is incorrect or the data is incomplete or corrupted.