Text Cipher (Caesar / ROT13 / XOR)
Encode or decode text using a Caesar cipher, ROT13, or a simple XOR cipher with a custom key, useful for puzzles, games, and learning how classic ciphers work.
These are classic, reversible text obfuscation methods for puzzles and fun, not real security. Don't use them to protect sensitive data.
Frequently asked questions
Is this safe to use for protecting sensitive information?+
No. These are classic, easily reversible ciphers meant for puzzles, games, and learning, not real security. Use proper encryption tools for anything sensitive.
What's the difference between Caesar cipher and ROT13?+
ROT13 is just a Caesar cipher with a fixed shift of 13, which makes it its own inverse: applying it twice returns the original text.
How does the XOR cipher work here?+
It XORs each byte of your text with a repeating key and outputs the result as hexadecimal, since raw XOR output usually isn't valid, readable text. Use the same key to decode it back.