Examine source code of WeImpactCarbon

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  "name": "__MSG_extName__",
  "version": "0.1.4",
  "description": "__MSG_extShortDesc__",
  "browser_action": {
    "default_icon": {
      "48": "public/icons/icon-48.png",
      "128": "public/icons/icon-128.png"
    },
    "default_title": "WeImpactCarbon",
    "default_popup": "public/popups/popup.html"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "assets/background-1d8caf3e.js"
    ]
  },
  "permissions": [
    "webRequest",
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "js": [
        "assets/detector-a8a7e88d.js"
      ],
      "matches": [
        "https://wecarbonimpact.wizardstech.io/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "storage-25f44c7a.js",
    "src/detector.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{11e20a42-7cda-4514-86bb-51f04e8c40b2}"
    }
  }
}