Secret Code Master! 🕵️

Learn how to make secret messages. It's like being a spy!

🔤 Caesar Cipher — Encode & Decode

Shift every letter along the alphabet. Encode scrambles a message; Decode unscrambles one.

🤖 Did Bob the AI send you here from chat? His trivia answers are hidden with a ROT3 Caesar cipher. Paste the scrambled answer below — Decode and ROT3 are already selected, so the real answer should appear right away.

Your text

Shift: 3

Decoded message:

Hello

More Ciphers

Try other secret codes!

Open →

Scrambled Text

Unscramble jumbled letters.

Open →

Hacker Tools

Advanced crypto utilities and hashing.

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Webmaster Tools

Inspect and analyze web pages.

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🎯 How To Use It

To hide a message: pick Encode, type your text, choose a shift, and share the scrambled result.
To read a scrambled message: pick Decode, paste it, and set the same shift it was made with.
Use the ROT3 / ROT13 presets for the two most common shifts, or drag the slider for any other.
Hit Copy to grab the result.

🧩 Cool Things To Do

Hide a treasure hunt clue.
Send secret notes to friends.
Make a puzzle game.
Challenge your class to crack a code.