Examine source code of Ecosia Search

{
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ad33d50-8f11-4ae8-8477-e7cef9b8a700}"
    }
  },
  "description": "Adds Ecosia as the default search engine.",
  "short_name": "Ecosia",
  "icons": {
    "128": "icons/icon.png"
  },
  "name": "Ecosia Search",
  "version": "2.3",
  "manifest_version": 2,
  "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"
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ]
}