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Caesar Cipher
Encrypt/decrypt with the Caesar shift cipher — any shift 1-25, ROT13 preset, brute-force solver showing all 25 candidates, and frequency-analysis auto-crack. 100% private.
100% Private Works Offline Instant
Encrypt/decrypt with the Caesar shift cipher — any shift 1-25, ROT13 preset, brute-force solver showing all 25 candidates, and frequency-analysis auto-crack. 100% private. Everything runs locally in your browser — your data never leaves your device.
How to use
- Enter your input in the tool above.
- Adjust any options to your preference.
- Use the Copy or Download buttons to save the result.
- Everything happens locally — your data never leaves your browser.