Examine source code of TechStack Spy

{
  "manifest_version": 2,
  "name": "TechStack Spy",
  "version": "1.0",
  "description": "Detecta las tecnologías usadas en el sitio web actual.",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a3181839-1474-4c86-a141-6ec2a9df4ef2}"
    }
  }
}