Apply the ROT13 letter substitution
ROT13 shifts each English letter by 13 positions. Running it twice returns the original text.
LOCAL CTF TOOL
ROT13 Decoder
Transform ROT13 text in one click. ROT13 is reversible and often hides hints, answers, or lightweight clues.
INPUT ·
LOCAL ONLY
OUTPUT
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Input is processed in your current browser. The current version does not upload your text to a server.
Common questions
How does this tool work?
The transformation runs in your browser.