Caesar Cipher — Encrypt / Decrypt — Auto-detect on Brute-force

Client-side Caesar cipher. Paste text, encrypt/decrypt, brute-force (auto-detects shift), or manually auto-detect. Nothing leaves your browser.

Shift: 3 Mode:

Input text (paste or type)

0 chars

0 words

File / Output

Output filename

Preview

Notes:

Only Latin letters A–Z / a–z are shifted. Other characters (digits, punctuation, emojis) are left unchanged.
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Brute-force / All shifts

Possible decryptions

Shifted alphabet: A→D

Shift	Result (first 140 chars)	Actions