Examine source code of ScrapThis

{
  "manifest_version": 2,
  "name": "Téléchargeur d'images ZIP",
  "version": "1.0",
  "description": "Télécharge toutes les images de la page et les compresse dans un fichier ZIP.",
  "permissions": [
    "activeTab",
    "downloads"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{26226af6-6b5f-4ebf-b602-b8d3866ceec0}"
    }
  }
}