Examine source code of OpenXNG Search

{
  "manifest_version": 2,
  "version": "0.0.1",
  "name": "OpenXNG Search",
  "description": "Add OpenXNG as default search engine.",
  "author": "Hidegon",
  "icons": {
    "16": "./searxng-wordmark.svg",
    "32": "./searxng-wordmark.svg",
    "48": "./searxng-wordmark.svg",
    "64": "./searxng-wordmark.svg",
    "96": "./searxng-wordmark.svg",
    "128": "./searxng-wordmark.svg",
    "256": "./searxng-wordmark.svg",
    "512": "./searxng-wordmark.svg"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "OpenXNG",
      "search_url": "https://opnxng.com/search?q={searchTerms}",
      "suggest_url": "https://openxng.com/autocompleter?q={searchTerms}",
      "favicon_url": "./searxng-wordmark.svg",
      "keyword": "@openxng @oxng",
      "is_default": true
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{989d6b16-b516-4d53-9f5c-1f379ddeb49e}"
    }
  }
}