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Encrypt Text

Encrypt or decrypt text with a password using AES-256-GCM. Share the encrypted message safely — only the password holder can read it.

Local processingNo sign-up needed
Your files are processed locally in your browser and never uploaded to a server.

How it works

  1. 1Choose encrypt or decrypt mode
  2. 2Paste your text and enter a password
  3. 3AES-256-GCM runs locally in your browser
  4. 4Copy the encrypted envelope or the restored text

FAQ

Is my text or password sent anywhere?

No. Encryption happens entirely in your browser with the Web Crypto API. Nothing is transmitted or stored.

What format is the encrypted message?

A devly-v1 envelope containing the salt, IV and AES-256-GCM ciphertext, encoded as base64. Anyone with the password and this tool can decrypt it.

How strong is the encryption?

AES-256-GCM authenticated encryption with a key derived from your password using PBKDF2-SHA256 at 100,000 iterations.

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Never leaves your browser. AES-256-GCM + PBKDF2 (100k iterations).