Examine source code of Youtube Tabs Fixed

{
  "name": "Youtube Tabs Fixed",
  "description": "Tidy up your Youtube subscription list with tab organization features",
  "version": "2.0.23",
  "manifest_version": 2,
  "icons": {
    "48": "icon-48.png",
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "iro.min.js",
        "youtube-tabs.js"
      ],
      "css": [
        "tabs.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "help.html",
    "export.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "youtube-tabs-fixed-public@molitar",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}