Google Analytics Debugger is a devtools extension for exposing tracking beacon data to developers.
Live data capture
Capture tracking beacons for Traditional and Universal Analytics properties while you browse. Beacons are automatically grouped by page context, making it easy to identify how tracked events relate to each other.
Review meta data for every tracking beacon sent to the Google Analytics servers with the context sensitive inspector.
Multiple tracker Support
Google Analytics supports multiple trackers on a single website, allowing specific metrics to be captured into different accounts. GA Debugger will capture beacons sent from every tracker on a page, grouping them together for easy navigation and interrogation.