Encrypt & Decrypt Text Online (AES, 3DES)
Runs 100% in your browser — your files never leave your device.
Share a secret note, protect a config value, or reverse a ciphertext you received. Pick AES, TripleDES, RC4, or Rabbit, enter a passphrase, and encrypt — the output is a portable base64 string anyone with the same passphrase and algorithm can decrypt here. Keys never leave your device.
How it works
- 1
Choose a cipher
AES is the default; TripleDES, RC4, and Rabbit also work.
- 2
Enter text and passphrase
The passphrase is the shared secret — send it separately.
- 3
Encrypt or decrypt
Get a base64 ciphertext, or paste one to recover the original text.
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