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Frequently Asked Questions
What is ROT13 encoding?
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. Since there are 26 letters, ROT13 is its own inverse - encoding twice returns the original text.
How secure is ROT13 encoding?
ROT13 provides no real security and should never be used for protecting sensitive information. It's merely an obfuscation technique that can be easily reversed by anyone familiar with the cipher.
What characters are affected by ROT13?
ROT13 only affects alphabetical characters (A-Z, a-z). Numbers, punctuation marks, spaces, and other symbols remain unchanged during the encoding process.
Why would I use ROT13 encoding?
ROT13 is commonly used for hiding spoilers, puzzle answers, or mildly sensitive content in online forums and newsgroups. It's not encryption but rather a way to make text not immediately readable.