Examine source code of Strong Password Generator

{
  "manifest_version": 3,
  "name": "Strong Password Generator",
  "version": "1.0",
  "description": "Generate strong passwords easily",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "action": {
    "default_popup": "index.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "index.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "permissions": [
    "storage",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "vishnu25012004@gmail.com"
    }
  }
}