Examine source code of Dual IP Info

{
  "version": "1.0.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "morohoschidanieli@gmail.com"
    }
  },
  "manifest_version": 3,
  "name": "Dual IP Info",
  "description": "One-click IP check for network troubleshooting, privacy, and curiosity. Get your public IP and location instantly.",
  "action": {
    "default_popup": "./index.html",
    "default_icon": "./assets/icons/icon128.png",
    "default_title": "Dual IP Info"
  },
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  }
}