Read an encrypted message
Received text beginning with MT1.? It was encrypted with AES-256 using MixTool's Text Encryption tool. Paste it here, enter the password the sender gave you, and the original message appears — decrypted locally in your browser.
If the password is wrong or the text was changed or cut off, AES-GCM's built-in integrity check refuses to decrypt instead of producing garbage, so you know something is wrong. The Classic ciphers tab decodes Caesar, ROT13, Atbash, Vigenère and Base64 for puzzles and learning.
How to decrypt text
- 1
Paste the encrypted text
The whole line, starting with MT1.
- 2
Enter the password
Exactly as the sender set it — it's case-sensitive.
- 3
Decrypt
The original message appears below.
Key features
AES-256-GCM decryption
Matching MixTool's encryption tool.
Tamper detection
Altered or incomplete text is rejected.
Local processing
Your password never leaves the browser.
Classic cipher decoder
Caesar with any shift, ROT13, Atbash, Vigenère and Base64.
Common uses
- Receiving private details: Open messages a friend or colleague encrypted for you.
- Your own notes: Read notes you stored encrypted.
- Puzzles: Decode Caesar and Vigenère ciphers.
Tips and good to know
- Copy the encrypted text carefully — even one missing character stops decryption.
- This tool decrypts text made with MixTool's format (MT1.). Text encrypted by other apps usually uses a different format.