Examine source code of Route443 Search

{
  "manifest_version": 2,
  "name": "Route443 Secure Search Engine",
  "short_name": "route443_search_engine",
  "description": "Add Route443.click as a secure search engine.",
  "version": "1.0.2",
  "icons": {
    "16": "icons/route443.svg",
    "64": "icons/route443.svg",
    "256": "icons/route443.svg"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Route443 Search Engine",
      "keyword": "@Route443",
      "favicon_url": "https://cdn.search.brave.com/serp/v1/static/brand/9b3cd14668935362449eebb1854f575091a1169bf51aba6a8c17b39f64a9d07e-favicon-16x16.png",
      "search_url": "https://route443.click/searxng/search?q={searchTerms}"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "Route443SearchExtension@AlainPicardIT",
      "strict_min_version": "55.0"
    }
  },
  "author": "AlainPicardIT",
  "homepage_url": "https://github.com/picarda/Route443-Search-Engine"
}