This audit ensures ad tag library scripts are loaded asynchronously. Requesting scripts synchronously leads to content being blocked until those scripts are loaded.
Include the async attribute in the script tag definition. For example:
<script async src="https://securepubads.g.doubleclick.net/tag/js/gpt.js"></script>
The following ad tag library scripts are supported:
|Ad Tag Library||Script(s)|
|Google Publisher Tag||