TabColorizer by CBIndustries

TabColorizer - Visual Environment Distinction

Instantly identify which environment you're working in! TabColorizer adds customizable colored borders to websites, making it impossible to confuse your test, training, and production systems.

✨ Key Features

• Smart Domain Matching - Supports wildcards (*.test.example.com), automatic www-matching, and root domain inclusion
• 5 Beautiful Themes - Choose from High Contrast, Nature, Industrial, Space, or Ocean with 15 colors each
• Advanced Customization - Adjust border width (5-20px) and style (solid, dashed, dotted) per rule
• Quick-Add Function - Add current domain with one click from the toolbar
• Import/Export - Backup and share your rules as JSON files
• Fully Accessible - WCAG 2.1 compliant with complete keyboard navigation and screen reader support
• Multilingual - Available in English, German, French, and Spanish

🎯 Perfect For

• Developers working with multiple environments
• QA testers who need clear visual distinction
• System administrators managing various servers
• Anyone who wants to organize their browsing experience

🚀 How It Works

1. Click the TabColorizer icon in your toolbar
2. Add a domain and choose a color
3. The website instantly gets a colored border
4. Never confuse environments again!

📝 Example Rules

• production.company.com → Red border (danger zone!)
• staging.company.com → Yellow border (caution)
• test.company.com → Green border (safe to test)
• localhost → Blue border (local development)

Privacy First

TabColorizer works completely offline. No data is collected, no analytics, no external connections. Your rules stay on your device.

Open Source

Developed with ❤️ for the Firefox community. Suggestions and feedback are always welcome!