Examine source code of Paraphrasing Tool Pro

{
  "name": "Paraphrasing Tool",
  "description": "Paraphrasing tool is a free chrome extension for rephrasing content online, anytime, anywhere.",
  "version": "1.0.4",
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "/icons/Icon-192.png",
      "32": "/icons/Icon-192.png",
      "48": "/icons/Icon-192.png",
      "128": "/icons/Icon-192.png"
    }
  },
  "icons": {
    "16": "/icons/Icon-192.png",
    "32": "/icons/Icon-192.png",
    "48": "/icons/Icon-192.png",
    "128": "/icons/Icon-192.png"
  },
  "manifest_version": 2,
  "background": {
    "scripts": [
      "eventPage.js"
    ]
  },
  "web_accessible_resources": [
    "/icons/Icon-192.png",
    "index.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{549db9ab-23e9-4e5f-b806-9acb8f7a72af}"
    }
  }
}