Examine source code of Nikunj123

{
  "name": "Nikunj123",
  "version": "1.3resigned1",
  "manifest_version": 2,
  "description": "This extension was created for testing purpose",
  "browser_action": {
    "default_icon": "icon.jpg"
  },
  "chrome_url_overrides": {
    "newtab": "redirect.html"
  },
  "permissions": [
    "bookmarks",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{590f5397-0cd6-4cca-80c3-932da9742c91}"
    }
  }
}