Examine source code of Network Port Scanner

{
  "manifest_version": 2,
  "name": "Network Port Scanner",
  "version": "1.0",
  "description": "Scan ports and detect OS of websites in a dark glassmorphism UI",
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>",
    "downloads"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{90f360fb-73cd-48f7-bb98-b9c5930f708f}"
    }
  }
}