Documentation
How to use DECODE — quick, clear, and friendly
Using DECODE
DECODE is a simple, focused toolbox for generating stylish QR codes and performing classical ciphers. It was built by Kingsley Maduabuchi out of love and passion for clear, accessible tools that make cryptography and QR generation approachable.
QR Generator
Create stylish QR codes with customizable colors, shapes, and optional logos, then download or share them.
Cipher Tools
Encrypt and decrypt messages with a collection of classic ciphers, including Caesar, Vigenère, and more.
PWA & Utilities
Installable app experience, theme toggles, and supportive utilities like QR download and share features.
Appreciate Our Work
If you love DECODE and want to support our efforts, you can send a small donation — every bit helps and is appreciated.
Quick Use Cases
- Use the QR Generator for marketing materials, event tickets, and digital menus.
- Encrypt short messages with the Cipher tools for learning or simple obfuscation.
- Share QR codes quickly by downloading or copying links to social profiles.
How to Use — Step-by-Step
Create a QR
Open QR Generator, enter the URL or text, pick a style, optionally upload a logo, then generate and download.
Encrypt/Decrypt with Ciphers
Choose a cipher, enter text, switch between encrypt and decrypt, set a key (if required), and copy the result.
Save & Share
Use the download button on QR results or copy the output of cipher tools for quick sharing.
PWA & Theme
Install DECODE for offline usage; toggle light/dark theme with the theme toggle on the header.
Examples
Enter: https://example.com/event - choose colors - dot style - add an organization logo - Generate → Download
Caesar: Message: Hello → Key: 3 → Encrypt → Lipps
FAQ & Tips
Use square or high-contrast logos for clear QR embedding. PNG or SVG are recommended.
The cipher tools are educational and not intended for production cryptographic security — do not use for sensitive secrets.
Use the Contact page or the links below to reach out; we’ll aim to respond within 24 hours.