Examine source code of Whoogle Search

{
  "manifest_version": 2,
  "name": "Whoogle Search",
  "version": "1.0.0",
  "description": "Cambiar el motor de búsqueda predeterminado a Whoogle",
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Whoogle",
      "is_default": true,
      "keyword": "wh",
      "search_url": "https://whoogle.dcs0.hu/search?q={searchTerms}",
      "encoding": "UTF-8",
      "favicon_url": "https://whoogle.dcs0.hu/static/img/favicon/apple-icon-57x57.png",
      "suggest_url": "https://whoogle.dcs0.hu/autocomplete?q={searchTerms}"
    }
  },
  "icons": {
    "16": "img/Whoogle16.png",
    "48": "img/Whoogle48.png",
    "128": "img/Whoogle128.png"
  },
  "permissions": [
    "search"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{853b687d-2cec-4a54-a549-d978dfc7d10c}"
    }
  }
}