Caesar Cipher
Encode and decode text by shifting letters by a fixed amount; a shift of 13 is ROT13. Everything runs in your browser.
FAQ
Is my text sent to a server?
No. Everything runs entirely in your browser and no text leaves your device.
What is ROT13?
It is a Caesar cipher with a shift of 13. Applying it twice returns the original text.
Does it encrypt non-Latin text?
Only Latin letters (A–Z, a–z) are shifted; other characters like digits and symbols stay unchanged.
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