The ad code you generate in your AdSense account is fully asynchronous. It offers improved web latency and a better user experience for your site’s visitors. If you need to generate synchronous ad code, for example, because you're using Google Ad Manager or another ad server that doesn't support asynchronous ad code, you'll need to modify your ad unit code.
To modify your existing ad unit code, make the following code updates:
Asynchronous ad unit code:
pagead/js/adsbygoogle.js"></script>
<!-- leaderboard -->
<ins class="adsbygoogle"
style="display:inline-block;width:728px;height:90px"
data-ad-client="ignoredxxxxxxxxxxxxxxxx"
data-ad-slot="1234567890"></ins>
<script>
(adsbygoogle = window.adsbygoogle || []).push({});
</script>
Synchronous ad unit code:
google_ad_client = "ignoredxxxxxxxxxxxxxxxx";
google_ad_slot = "1234567890";
google_ad_width = 728;
google_ad_height = 90;
</script>
<!-- leaderboard -->
<script type="text/javascript"
src="https://pagead2.googlesyndication.com/
pagead/show_ads.js">
</script>