> rot13 | rot47 | caesar <
// ROT13/ROT47 - Simple substitution ciphers for text obfuscation
Easy Obfuscation
Quick text scrambling for spoilers, puzzles, or simple privacy.
Self-Inverse
Same operation encodes and decodes - apply twice to get original text.
Multiple Modes
ROT13 for letters, ROT47 for all printable ASCII, or custom shift values.
>> technical info
How ROT13/ROT47 Works:
ROT13 replaces each letter with the letter 13 positions after it in the alphabet. ROT47 does the same for all printable ASCII characters (33-126). Custom Caesar cipher allows any shift value for letters.
Examples:
ROT13: Hello → Uryyb ROT47: Hello! → w6==@P
Why Use ROT13/ROT47:
- >Hide spoilers in forums
- >Simple text obfuscation
- >Puzzles and games
- >Basic privacy protection
- >Educational cryptography
>> frequently asked questions
What is ROT13?
ROT13 (rotate by 13 places) is a simple letter substitution cipher that replaces each letter with the letter 13 positions after it in the alphabet. It's self-inverse, meaning applying it twice returns the original text.
What's the difference between ROT13 and ROT47?
ROT13 only rotates letters (A-Z, a-z), leaving numbers and symbols unchanged. ROT47 rotates all printable ASCII characters (! through ~), including numbers, letters, and symbols.
Is ROT13 secure encryption?
No, ROT13 is not secure encryption. It's a simple substitution cipher that's trivial to break. It's meant for light obfuscation like hiding spoilers, not for security.
What is a Caesar cipher?
A Caesar cipher shifts letters by a fixed number of positions in the alphabet. ROT13 is a special case of Caesar cipher with a shift of 13. Julius Caesar allegedly used a shift of 3.