AV-S18
ROT13, Caesar & Morse
ROT13 and Caesar shifts with brute force, plus Morse code translation with audio.
● Runs on your device; nothing is uploadedHow to use it
- Choose ROT13 / Caesar or Morse code.
- For Caesar, enter Text and a Shift, or press ROT13 or Reverse direction.
- Check the Brute force table for the most English-looking key.
- For Morse, choose Text → Morse or Morse → Text and type the input.
- Set Speed and Tone, then press Play Morse to listen.
Limits
- Text
- 200,000 characters
- Brute force
- First 2,000 characters
- Morse speed
- 5–40 words per minute
- Morse tone
- 400–1,000 Hz
- Morse playback
- 3,000 dot units (~3 minutes at 20 WPM)
Features
- Tries all 25 keys, ranked by chi-squared English letter frequency
- ITU-R M.1677-1 International Morse, including punctuation
- Reports characters with no Morse equivalent
- Web Audio playback with PARIS timing
For AI agents: avtools_caesar_morse
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