Examine source code of Multi-URL Launcer

{
  "manifest_version": 2,
  "name": "Multi-URL Opener",
  "version": "1.0.0",
  "description": "Open multiple URLs at once with custom labels",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Multi-URL Opener"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "multi-url-opener@example.com",
      "strict_min_version": "79.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}