ShadowCode is a lightweight, self-contained HTML utility designed for encrypting and decrypting everyday messages and files.
v4: added morce code, new multi tab, updated the UI a bit, lots of other small things.
- Auto-Analysis Engine — Automatically detects and cracks ciphers like Atbash and Shift using English word scoring.
- File Encryption — Encrypt and decrypt supported file types.
- Keyless Vigenère — Solve Vigenère ciphers without a key.
- Dual Encryption — Layer multiple ciphers for extra complexity.
- Multiple Ciphers — Includes Vigenère, Atbash, Index Substitution, Shift, ShadowGlyph, morse code, and Rail ciphers.
- Portable — No installation required; works directly in your browser, note: dose need wifi for tailwind (UI formating).
- HTML5
- Tailwind CSS
- JavaScript (ES6+)
- AI Assistance (logic and refinement)
- Download the HTML file
- Open it in your browser
- And then encrypt you messages
Updates are built into the UI — ShadowCode can notify you when a new version is available.
UX is my buggest focus. If something feels confusing or you have a feature idea, feedback is always welcome.