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Encrypt any text with AES-256-GCM encryption. Enter a password to encrypt — share the encrypted string safely. Decrypt with the same password. Uses the Web Crypto API — nothing leaves your browser.
Free online text encryption tool using AES-256-GCM — the gold standard in symmetric encryption. Enter your text and a password to produce an encrypted string that's safe to share over email, chat, or any insecure channel. Only someone with the exact password can decrypt it. Everything runs in your browser using the Web Crypto API. No data is sent to any server. No signup, no limits.
Your password is converted into a 256-bit cryptographic key using PBKDF2 (Password-Based Key Derivation Function 2) with 100,000 iterations and a random salt. The text is then encrypted using AES-256 in GCM mode, which provides both confidentiality and integrity verification. A random IV (initialization vector) ensures the same text+password produces different encrypted output each time. The salt, IV, and ciphertext are combined into a single Base64 string.
Share passwords, API keys, or sensitive information over insecure channels (email, Slack, SMS). Send the encrypted text through the channel and share the password through a different channel (phone call, in person). Even if the encrypted text is intercepted, it's useless without the password.