Examine source code of Choice Spinner

{
  "manifest_version": 2,
  "name": "Choice Spinner",
  "description": "Settle debates fast: a custom option wheel with smooth spin animation, plus a coin and a full set of tabletop dice.",
  "version": "3.6",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9898e551-cd72-454d-8361-08920febc3b3}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_title": "Choice Spinner",
    "default_popup": "src/popup.html",
    "default_icon": {
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "64": "images/icon-64.png",
      "96": "images/icon-96.png",
      "128": "images/icon-128.png"
    }
  }
}