Examine source code of metaverse2internet

{
  "manifest_version": 2,
  "name": "metaverse2internet",
  "version": "1.0.0",
  "description": "the internet is the next version of the internet",
  "icons": {
    "48": "icon-48x48.png",
    "96": "icon-96x96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "javascript.js"
      ]
    }
  ]
}