Examine source code of Seoul Academy

{
  "manifest_version": 2,
  "name": "Seoul Academy",
  "version": "2.0.1",
  "description": "The task requires identifying the frequency of the term 'seoul' on a given webpage.",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f650a154-0dc6-4e4f-8849-22750a1f30bb}"
    }
  }
}