ROT47 Cipher
Encode or decode any printable ASCII text with the self-inverse ROT47 cipher.
What Is the ROT47 Cipher?
ROT47 is a simple substitution cipher that rotates every printable ASCII character (codes 33–126) by 47 positions within that 94-character range. Because the range has 94 characters and the shift is 47 — exactly half — applying ROT47 twice always returns the original text. Encoding and decoding are the same operation, which is why a single button suffices. Unlike ROT13 (which only rotates letters), ROT47 also transforms digits, punctuation, and symbols, making it a quick obfuscation for any printable ASCII content. It provides no real cryptographic security; use it to lightly hide spoilers or puzzle answers. Everything runs locally in your browser.
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