Examine source code of EcoIndex.fr

{
  "version": "2.12.2",
  "manifest_version": 2,
  "homepage_url": "https://www.ecoindex.fr",
  "name": "EcoIndex.fr",
  "description": "Récupérer facilement les analyses Ecoindex faites sur une page grace au moteur ecoindex.fr",
  "icons": {
    "144": "images/ic_launcher.png"
  },
  "browser_action": {
    "default_icon": "images/ic_launcher.png",
    "default_title": "Ecoindex",
    "default_popup": "popup/popup.html"
  },
  "permissions": [
    "activeTab",
    "https://bff.ecoindex.fr/*",
    "storage"
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1d0f5905-390b-4b99-913d-5bf7be499a60}"
    }
  }
}