ShadowCode is a lightweight, self-contained HTML utility designed for encrypting and decrypting everyday messages.
v3.6: i have added a new tab: keyless Vigenère, ok, it can take a very long time in some cases but it works very well, it uses webworkers and is as simple as possible to try to cut time, it solves Vigenère if you dont have a key, very fast at solveing Vigenère with a key of 1-5, 6-7 takes a little while but still not to long, 8+ will take very very long.
- Auto-Analysis Engine: Automatically detects and cracks ciphers like Atbash and Shift by scoring them against an English word base.
- Keyless-Vigenère: Supports solving Vigenère without a key.
- Dual Encryption: Supports layering multiple encryption methods for extra security.
- Multiple Ciphers: Built-in support for Vigenère, Atbash, Index Substitution, Shift, custom Glyph (ShadowGlyph) and rail ciphers.
- Portable: No installation required—just open the
.htmlfile in any web browser.
- HTML5 / Tailwind CSS
- JavaScript (ES6+)
- AI Assistance (Logic & Refinement)
just simply download and open, updates are easy: just open the file, it will say if there is an update and you can download straght from the file it is all simple UI, i want to try to make it as easy to use as possible, please tell me if you would like a feture to help you use it