Examine source code of NewTab-URL

{
  "manifest_version": 3,
  "name": "NewTab-URL",
  "version": "1.4.1",
  "description": "Redirects Firefox new tabs to one or more locally saved HTTP/HTTPS URLs or about:blank, with homepage sync, bare-address scheme handling, and a Bypass/Engage control.",
  "permissions": [
    "storage",
    "browserSettings",
    "tabs"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_title": "Open NewTab-URL settings",
    "default_popup": "options.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bare-url-new-tab@bob.local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}