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Encrypt & Decrypt Text with Argon2id

Protect sensitive messages in the browser using Argon2id-derived keys and AES-GCM, then share Base64 payloads securely.

Encrypt Text

Argon2 Settings

Memory Cost 256 MB
Parallelism 1 · fixed

The browser runs Argon2id on one thread. Extra lanes would not be faster for you, but would be for an attacker's parallel hardware.

These settings are stored inside the encrypted text, so decrypting needs only the password.

Decrypt Text

About Text Encryption

  • 🔒 Utilizes Argon2id + AES-GCM for password-based text security
  • 🌐 100% client-side — all encryption happens in your browser
  • 🚀 Optimized parameters for fast, repeatable message workflows
  • 📝 Supports up to 5000 characters per encryption cycle
  • 🔐 Outputs Base64 payloads for easy storage, transport, or QA
  • ⚠️ Passwords are unrecoverable—store them securely
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