Text Encrypt and Decrypt
Free text encrypt and decrypt tool — protect a message with a password using AES-GCM in your browser, then decrypt it with the same password. No signup.
About the Text Encrypt and Decrypt
This free tool encrypts and decrypts text with a password using strong AES-GCM encryption performed entirely in your browser. Type a message and a password to get a scrambled ciphertext you can safely share, then anyone with the same password can decrypt it back to the original.
Because the encryption uses the Web Crypto API on your device, your message and password never leave your browser. It is a simple way to protect sensitive notes, share secrets over untrusted channels, or store confidential snippets.
How to Use the Text Encrypt and Decrypt
- 1Choose whether to encrypt or decrypt.
- 2Enter your text and a strong password.
- 3Run the tool to produce the ciphertext or plaintext.
- 4Copy the result and share it securely.
Frequently Asked Questions
What encryption does it use?
It uses AES-GCM, a modern authenticated encryption scheme, with a key derived from your password. The encryption runs via the browser's Web Crypto API on your device.
What happens if I forget the password?
There is no recovery. AES-GCM is designed so the ciphertext cannot be decrypted without the correct password, so store your password safely.
Is my text sent to a server?
No. Both encryption and decryption happen entirely in your browser, so your message and password never leave your device.
Can the recipient decrypt without this tool?
They need a tool that understands the same AES-GCM format and the shared password. The simplest way is to have them use this same page to decrypt.