Caesar Cipher / ROT13
Apply a Caesar shift to text (1–25) including the canonical ROT13 (shift 13). Live preview, toggle between encode and decode.
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Output
Uryyb, jbeyq!
Only A-Z and a-z shift; digits, punctuation, and other characters pass through unchanged.
How to use
- 1Pick mode and shiftROT13 is the default.
- 2Type or paste textLetters shift, everything else stays.