⚙️ Caesar Cipher
Apply historical numeric letter index displacement encryption passes. Preserves case, ignores non‑letters.
📖 How to Use Caesar Cipher (Step by Step)
- Step 1: Enter your text into the input area (left panel).
- Step 2: Choose a shift value using the slider, numeric input, or preset buttons (e.g., ROT13).
- Step 3: Click "Encrypt" to shift letters forward, or "Decrypt" to shift backward (same shift reverses encryption).
- Step 4: The result appears in the right panel. You can copy it, swap with input, or clear all fields.
- Step 5: Use the "Load Example" button to test with a sample phrase.
💡 What is Caesar Cipher?
- ✔️ One of the oldest encryption techniques – shift each letter by a fixed number.
- ✔️ Preserves case and leaves non‑letters (spaces, punctuation) unchanged.
- ✔️ ROT13 (shift 13) is a special self‑inverse cipher often used for hiding spoilers.
💡 Pro Tip: Use the same shift value to encrypt and decrypt – the cipher is symmetric. ROT13 is its own inverse, so encrypting twice returns the original text.
🔒 100% client‑side • Your data never uploaded • Classic cipher • Zero tracking