Examine source code of Domain Tracker

{
  "manifest_version": 3,
  "name": "Domain Tracker",
  "version": "1.0.6",
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a7f3b2e1-9c4d-4a8b-b1e6-5f2c8d9a3e7c}"
    }
  },
  "permissions": [
    "tabs",
    "webRequest",
    "storage",
    "activeTab"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "options_page": "options.html"
}