Encrypt text and turn words into emoji
Encrypto is a free tool for sending secret messages two different ways. The Emoji Cipher turns any text into a playful string of emojis you can share with friends, then turns it straight back into words. The Password Lock goes further: it encrypts your message with AES-256, the same standard used by banks and messaging apps, so only someone who knows the password can ever read it.
Both modes work entirely in your browser — nothing is uploaded, stored or tracked — and both can decode as well as encode, so you can read messages people send you right here. It's perfect for a fun caption, a private note, a password you need to pass along, or any text you'd rather not send in the clear.
How to use it
- Pick a mode at the top: Emoji Cipher (fun) or Password Lock (secure).
- Choose the direction — encode/encrypt to scramble, or decode/decrypt to read.
- Type or paste your text. For Password Lock, also enter a password.
- Tap the button, then Copy the result and share it. To unlock, the other person uses the same mode (and password).
Emoji Cipher vs Password Lock — what's the difference?
The two modes solve different problems, and it's important to be honest about it. The Emoji Cipher swaps your text for emojis using a fixed pattern, so it looks secret and is fun to share — but anyone who pastes those emojis back into Encrypto will instantly read your message. It's obfuscation, not security. The Password Lock is genuine encryption: your text is scrambled with a key derived from your password, and without that exact password the result is meaningless. If you actually need privacy, always use Password Lock.
How the password encryption works
When you lock a message, Encrypto uses the browser's built-in Web Crypto API to run AES-256-GCM. Your password is stretched into a strong key with PBKDF2 (150,000 rounds of SHA-256), and a fresh random salt and initialization vector are generated every time, so encrypting the same text twice produces different output. The salt, IV and ciphertext are bundled into the code you copy. Because the password never leaves your device and is never stored, no one — not even us — can recover the message without it. That also means a forgotten password cannot be reset: the security comes precisely from there being no back door.
Tips for sharing a secret message
Send the encrypted code and the password through two different channels — for example, the code by message and the password by a phone call. Choose a password that is long and not easy to guess, and avoid reusing an important password here. If you only want something playful and shareable, the Emoji Cipher is ideal; if it genuinely needs to stay private, reach for the Password Lock.
Is it private and free?
Yes on both counts. Encrypto is completely free with no sign-up and no limits, and every step runs locally in your browser using standard, audited cryptography. Your message, the result and your password are never sent to a server, logged or shared. You can use it on text in any language — Urdu, Arabic, Hindi, accented letters and even existing emojis all encode and decode correctly.