Examine source code of Alt Tab Page

{
  "manifest_version": 2,
  "name": "Alt Tab Page",
  "version": "1.0.1resigned1",
  "description": "Alt Tab Page allows the user to select their preferred load page for new tabs and defaults to Google's when not in use.",
  "applications": {
    "gecko": {
      "id": "altTabPage@itdominator.com",
      "strict_min_version": "54.0"
    }
  },
  "icons": {
    "48": "icons/altTabPage_48x48.png",
    "96": "icons/altTabPage_96x96.png"
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "pages/options.html"
  },
  "chrome_url_overrides": {
    "newtab": "pages/newTab.html"
  }
}