Skip to content
InstaFontStudio
100% BROWSER-BASED · NOTHING EVER LEAVES YOUR DEVICE
v7.0

Encrypt Text Online

Encrypt any text with a password using AES-256. It happens in your browser, so your message never leaves your device.

AES-256 encryption
No data ever stored
Works offline once loaded
👋 New here? Type your message → set a password → press Encrypt. That's it — decrypting works the same way in reverse.
Your message ?Type or paste the message you want to lock with a password.
You can also drag & drop a .txt file here 0 / 20,000 characters
Scan a QR code ?Point your camera at a QR code someone sent you, or upload a screenshot/photo of one — the encrypted text will be read straight into the box above.

Camera access needs your permission, and works best on https:// pages.

Password ?Anyone who wants to unlock this text will need this exact password.
Confirm password
Password strength: —
Cipher: AES-256-GCM (authenticated) · Key derived with PBKDF2-SHA256 (60,000 iterations) using your browser's native encryption engine — fast, and far stronger against brute-force than a single hashing round. ?This is a real security upgrade, not just a label: deriving the encryption key takes real computational work, which makes large-scale password-guessing attacks dramatically slower.
Second password
Both passwords will be needed to unlock this message. Store them separately for maximum security.
Self-destruct ?After this time, the message can no longer be decrypted — even with the right password.
Password hint (optional) ?Shown to anyone with the encrypted text, before they enter a password. Never put the password itself here.
Overall protection: Basic Set a stronger password to improve this score.

Result
Cover image (optional)

Leave empty and we'll auto-generate a suitable image. PNG output only — JPEG, WhatsApp, and other apps that recompress images will destroy the hidden data, so share the downloaded PNG file directly.

Scan to copy the encrypted text on another device.

Keep creating

Message locked? Share it as a QR code QR Code Generator Fancy another code? Try Morse code Morse Code Translator Want to hide text? Try invisible text Invisible Text Generator

About this generator

To encrypt text online, type your message, choose a password and tap Encrypt. The tool uses AES-256-GCM with a key made from your password, and everything runs in your browser. You get a block of scrambled text that is safe to paste into an email, a chat or a note. Only someone with the password can turn it back into the original message.

How to use this tool

  1. 1

    Write your message

    Type or paste the text you want to protect.

  2. 2

    Choose a strong password

    Use a long password or a few random words. The meter shows how strong it is.

  3. 3

    Encrypt and copy

    Tap Encrypt, then copy the result or share it as a link or QR code.

Frequently asked questions

Is it safe to encrypt text online?
Here the encryption happens in your browser, so the text and password are not sent anywhere. The security then depends on a strong password.
What happens if I lose the password?
The message cannot be recovered. There is no reset because the password is never stored.
What can I do with the encrypted text?
Paste it into any chat, email or note. The other person decrypts it with the same password on the Decrypt tab.

More text encryption tools

Text Encrypt & Decrypt Decrypt Text AES-256 Encryption Password Protect Text Secret Message Encoder Self-Destructing Message Hide Text in Image Encrypted QR Code Encrypt WhatsApp Messages Double Encryption

Related tools

QR Code Generator Invisible Text Generator Morse Code Translator