Plaintext is processed in your browser. Every algorithm has its own plaintext, password, Encrypt button and raw Base64 output.
LOCAL PROCESSING256-BIT KEYSRAW BASE64
01
Encryption
AES-256-GCM
Authenticated encryption
READY
XCHACHA20-POLY1305
Extended nonce AEAD
READY
CHACHA20-POLY1305
Authenticated stream cipher
READY
SERPENT-256
Serpent + authenticated seal
READY
TWOFISH-256
Twofish-256 CTR + HMAC-SHA256
READY
Format: salt + nonce/IV + ciphertext + authentication data are packed into binary and then Base64-encoded. The Base64 string itself contains no readable plaintext.