Examine source code of Reddit Search Engine

{
  "manifest_version": 2,
  "name": "Subreddit Shortcut",
  "description": "Adds a 'search engine' that allows direct access to a subreddit.",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "55.0"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Subreddit",
      "search_url": "https://www.reddit.com/r/{searchTerms}",
      "keyword": "@reddit",
      "favicon_url": "https://www.reddit.com/favicon.ico",
      "is_default": false,
      "encoding": "UTF-8"
    }
  }
}