Examine source code of Rapusia - Search Engine

{
  "name": "__MSG_appName__",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "1.2",
  "browser_action": {
    "default_icon": "ico128.png"
  },
  "chrome_url_overrides": {
    "newtab": "search.html"
  },
  "web_accessible_resources": [
    "logo.webp"
  ],
  "chrome_settings_overrides": {
    "homepage": "https://rapusia.org",
    "search_provider": {
      "name": "rapusia.org",
      "keyword": "Search on Rapusia",
      "search_url": "https://rapusia.org?q={searchTerms}",
      "favicon_url": "https://rapusia.org/favicon.ico",
      "encoding": "UTF-8",
      "is_default": true
    },
    "startup_pages": [
      "https://rapusia.org"
    ]
  },
  "externally_connectable": {
    "matches": [
      "*://localhost/*",
      "*://rapusia.org/*"
    ]
  },
  "background": {
    "scripts": [
      "rapusia_start.js"
    ],
    "persistent": false
  },
  "manifest_version": 2
}