Examine source code of utubehits.com

{
  "manifest_version": 3,
  "name": "utubehits.com",
  "description": "__MSG_appDesc__",
  "version": "1.6.1",
  "minimum_chrome_version": "150",
  "default_locale": "en",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": "icon48.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon48.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "webRequest",
    "cookies",
    "scripting"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://*.utubehits.com/*",
    "*://*.href.li/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.utubehits.com/*"
      ],
      "js": [
        "install.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c21f4fd-2359-44b3-bd5b-4a05902d32f3}"
    }
  }
}