Kitsy AI

🔒Text Encryption

Encrypt and decrypt text (AES)

Want a deeper walkthrough? Read our complete guide to Text Encryption →

About the Text Encryption

Text Encryption encrypts and decrypts text using AES with a passphrase you choose, so only someone with the passphrase can read the message.

All cryptography runs locally in your browser — the text and passphrase never leave your device.

Common use cases

  • Encrypting sensitive notes before storing them
  • Sharing secrets that only the recipient can decrypt
  • Protecting text in untrusted environments
  • Learning how symmetric encryption works

How to use the Text Encryption

  1. Enter the text you want to encrypt.
  2. Provide a passphrase (keep it secret and safe).
  3. Encrypt to get the ciphertext, or paste ciphertext and decrypt with the same passphrase.

Frequently asked questions

What happens if I lose the passphrase?

The text cannot be recovered without the correct passphrase — there is no backdoor, so store it carefully.

Is this secure?

It uses AES encryption locally; security depends on using a strong, secret passphrase.

Is anything sent to a server?

No, encryption and decryption happen entirely in your browser.