Examine source code of SmartQuery

{
  "manifest_version": 3,
  "name": "SmartQuery",
  "version": "1.0",
  "description": "SmartQuery enhances your browsing by allowing you to highlight any text and instantly search it across pre-defined search engines, dictionaries, or encyclopedias via a small, non-intrusive popup. Users can customize their preferred search sources.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "smartquery.png"
  },
  "icons": {
    "128": "smartquery.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "l4guillermongjnkv73@hotmail.com"
    }
  }
}