lock Text Encrypt / Decrypt
Encrypt and decrypt text securely using AES-256-GCM with a password. All processing happens in your browser.
This tool encrypts text using AES-256 with a password you choose, producing scrambled ciphertext that can only be decrypted back to the original with the same password - useful for protecting sensitive notes, sharing a secret securely, or encrypting text before storing it somewhere less trusted.
Frequently asked questions
AES-256 is a widely-trusted, industry-standard encryption algorithm used to protect everything from government data to banking systems - it's considered extremely secure when used correctly with a strong password.
The password is not stored anywhere by this tool - if you forget it, there is no way to recover the original text from the encrypted output. Keep the password somewhere safe.
Encryption/decryption runs entirely in your browser - neither your text nor your password is transmitted anywhere.
The encryption algorithm is only as strong as the password protecting it - use a long, random, unique password rather than something easily guessable, since a weak password undermines even strong encryption.