AES-256 text encryption and decryption
Protect a note, a message or a snippet with a password. The text is encrypted with AES-256 in GCM mode, so any change is detected, using a key derived with Argon2id or PBKDF2 and a fresh random salt and nonce every time. Anyone with the text and password can decrypt it, and no one else can.
Tooloat runs in your browser and needs JavaScript. It opens in a moment, and your files are processed on your device.
How it works
- Type or paste the text and a password.
- Choose the key derivation and click Encrypt.
- Share the encrypted block. Paste it back and enter the password to decrypt.
Why use it
- AES-256-GCM authenticated encryption.
- Argon2id or PBKDF2 with 600,000 iterations.
- Self describing, tamper evident output.
- Runs locally, nothing is stored.
Questions and answers
Can I recover the text if I forget the password?
No. There is no recovery, so keep the password safe.
Is this safe for real secrets?
The cryptography is standard and runs locally. The strength of the result depends on how strong your password is.
Does it work with files?
This tool handles text. Use it for notes, keys and short messages.
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