Examine source code of Entireweb - Search Engine

{
  "manifest_version": 3,
  "name": "Clean New Tab by Entireweb",
  "description": "Replaces your new tab page with a clean and fast search experience. Uses Entireweb.com as the default search engine in Firefox.",
  "version": "2.3.0",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "permissions": [
    "search"
  ],
  "action": {
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_title": "Clean New Tab by Entireweb"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Entireweb",
      "keyword": "entireweb",
      "search_url": "https://www.entireweb.com/search?q={searchTerms}",
      "favicon_url": "/favicon.ico",
      "is_default": true
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clean-newtab-entireweb@example.com",
      "strict_min_version": "109.0"
    }
  }
}