Without Plugin！How to LazyLoad Google Adsense to speed up display speed.

Loading Google Adsense significantly reduces page display speed.

The following methods will improve the expectation of problem resolution and should be tried.

Remove Script tag in Google Adsense code.

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8085372009702943"
     crossorigin="anonymous"></script>
<!-- フッター -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-8085372009702943"
     data-ad-slot="2683573049"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>

Delete the following part of the above code.

<script async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-8085372009702943"
     crossorigin="anonymous"></script>
</script>

Code after Script tag deletion.

<!-- フッター -->
<ins class="adsbygoogle"
     style="display:block"
     data-ad-client="ca-pub-8085372009702943"
     data-ad-slot="2683573049"
     data-ad-format="auto"
     data-full-width-responsive="true"></ins>
<script>
     (adsbygoogle = window.adsbygoogle || []).push({});
</script>

Install code for LazyLoad.

Introducing the following code will cause a delayed loading at the timing of scrolling.

Place the following code just before /body.

<script>
//<![CDATA[
//lazy load ads
var lazyloadads = false;
window.addEventListener("scroll", function() {
    if ((document.documentElement.scrollTop != 0 && lazyloadads === false) || (document.body.scrollTop != 0 && lazyloadads === false)) {

        (function() {
            var ad = document.createElement('script');
            ad.type = 'text/javascript';
            ad.async = true;
            ad.src = 'https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js';
            var sc = document.getElementsByTagName('script')[0];
            sc.parentNode.insertBefore(ad, sc);
        })();

        lazyloadads = true;
    }
}, true)
//]]>
</script>

These are simple methods and we encourage you to try them.