Examine source code of Ecosia

{
  "browser_specific_settings": {
    "gecko": {
      "id": "{beb12ca3-6bb8-4294-8706-8bfc56512230}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "description": "Adds Ecosia as the default search engine.",
  "short_name": "Ecosia",
  "icons": {
    "128": "icons/icon.png"
  },
  "version": "3.1",
  "manifest_version": 2,
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "chrome_settings_overrides": {
    "search_provider": {
      "search_url": "https://www.ecosia.org/search?q={searchTerms}",
      "name": "Ecosia Search",
      "keyword": "ecosia",
      "encoding": "UTF-8",
      "is_default": true,
      "favicon_url": "https://www.ecosia.org/favicon.ico"
    }
  },
  "name": "Ecosia Search"
}