EnvIcon - Environment Identifier & Favicon Badge

Tracking since Apr 1, 2026.

Changelog

• Apr 20, 2026
  description

  Never mix up your Production, Staging, and Development tabs again.
  
  EnvIcon is a productivity tool designed specifically for developers, QA engineers, and project managers who work across multiple environments simultaneously. It automatically detects your current environment based on hostnames and overlays a clear visual indicator (DEV/STG/PROD) directly onto the site's favicon.
  
  Whether you're testing new features or performing critical production hotfixes, EnvIcon ensures you always know exactly which environment you are interacting with at a single glance.

  Tired of accidentally making changes in the wrong environment? EnvIcon is here to help developers, QA engineers, and content managers visually distinguish between Development, Staging, Production, and any other custom environments at a glance.
  
  By automatically applying a customizable overlay to browser favicons and displaying an optional floating page badge, EnvIcon ensures you always know exactly which environment you are currently working in. 
  
  ✨ Key Features ✨
  - 🔠 Favicon Overlay: Dynamically adds a clear label (up to 4 characters, e.g., "PROD", "STG", "DEV") directly onto the site's original favicon.
  - 🏷️ In-Page Badge: Displays a highly visible, semi-transparent text badge in any corner of the webpage.
  - 🎯 Flexible Matching Rules: Supports exact hostnames and Regular Expressions (Regex) for matching complex or localized URL patterns.
  - 🎨 Fully Customizable:
    - Create unlimited custom environments (e.g., Local, QA, UAT).
    - Customize badge text, background color, and outline color.
    - Turn the favicon or page badge features on/off independently per environment.
    - Position the in-page badge in any of the four corners and adjust its font size.
  - ⚡ Dynamic Detection: Seamlessly detects and updates the overlay even if the website changes its favicon dynamically via JavaScript.
  - 🪟 Smart URL Checker: Built-in tool in the options page to quickly test if your URLs or hostnames match your configured rules.
  - 🌍 Multilingual UI: The extension settings page is available in both English and Japanese.
  
  🛡️ Privacy & Security
  EnvIcon operates entirely locally within your browser. It does not collect, store, or transmit any of your personal data, web traffic, or browsing history to external servers. 
  
  Boost your productivity and prevent costly mistakes today with EnvIcon!

• Apr 20, 2026
  short_description

  Customize favicons for development, staging, and production environments.

  Easily distinguish Development, Staging, and Production environments with customizable favicon overlays and on-page badges.

• Apr 20, 2026
  name

  EnvIcon

  EnvIcon - Environment Identifier & Favicon Badge

Permissions & access

Permissions

storage

Host access

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Screenshots

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