Secure Text Encryptor / Decryptor
AES‑256‑GCM
Runs entirely in your browser via the Web Crypto API. Nothing leaves this page.
Encrypt
Plaintext
Key (base64, 256‑bit)
Generate key
Save this somewhere safe. Anyone with this key can decrypt.
Use passphrase instead
Derives a key via PBKDF2‑SHA256 (310k iters). No separate key is shown; your passphrase
is
the secret.
Encrypt
Copy package
Download .enc
Clear
Encrypted package (JSON)
Authenticated
encryption (GCM): detects tampering.
Decrypt
Encrypted package (JSON)
Key (base64)
Passphrase (if package used PBKDF2)
Decrypt
Copy plaintext
Clear
Plaintext