Examine source code of Wikipedia Search Engine

{
  "manifest_version": 2,
  "name": "Wikipedia search engine",
  "version": "1.1",
  "description": "Adds a search engine that searches wikipedia.org",
  "homepage_url": "https://github.com/HarryWhitehorn/firefox-wikipedia-search",
  "icons": {
    "48": "icons/wiki_icon-48.png",
    "96": "icons/wiki_icon-96.png",
    "128": "icons/wiki_icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "65.0",
      "id": "{a606270a-d15a-4b8d-84cc-c0ce9c97e19e}"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Wikipedia",
      "search_url": "https://en.wikipedia.org/w/index.php?search={searchTerms}",
      "keyword": "wiki",
      "favicon_url": "https://en.wikipedia.org/static/favicon/wikipedia.ico",
      "is_default": false,
      "encoding": "UTF-8"
    }
  }
}