Examine source code of Loopin

{
  "name": "Loopin",
  "version": "1.9",
  "description": "Bite sized questions, to help you, improve your workplace.",
  "icons": {
    "128": "img/Logo-icon.png"
  },
  "background": {
    "scripts": [
      "/libs/jquery-3.6.0.min.js",
      "/js/background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_icon": "img/Logo-icon.png",
    "default_title": "Loopin",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "manifest_version": 2
}