Examine source code of Niv Analyzor

{
  "description": "Show Site Favioicon URL,Page Size and DNS Details",
  "manifest_version": 2,
  "name": "Niv Analyzor",
  "author": "Nivsoft",
  "version": "1.0.0",
  "homepage_url": "http://www.nivsoft.ir/Ext",
  "icons": {
    "48": "icons/logo-48.png",
    "128": "icons/logo-128.png"
  },
  "browser_action": {
    "default_icon": "icons/logo-32.png",
    "theme_icons": [
      {
        "light": "icons/logo-32.png",
        "dark": "icons/logo-32.png",
        "size": 32
      }
    ],
    "default_title": "NivSoft SiteAnalyzer",
    "default_popup": "popup/index.html"
  },
  "permissions": [
    "clipboardWrite",
    "notifications",
    "storage",
    "tabs",
    "activeTab",
    "dns"
  ],
  "background": {
    "scripts": [
      "niv.js"
    ]
  },
  "applications": {
    "gecko": {
      "id": "ex@nivsoft.ir"
    }
  }
}