Alex Kozack

<p>After loading the page, the plugin starts to follow the user’s screen. And as soon as a link appears on the screen within your site – the browser executes the request and downloads it. Now that the user clicks on the link, the browser will instantly display a new cache page. Thus, User Experience will indicate that your site is loading instantly.</p>
<h3>How it work</h3>
<p>The plugin uses the built-in browser features to predict user behavior for preloading the tourniquet. See <a href="https://en.wikipedia.org/wiki/Link_prefetching" title="Link prefetching" rel="nofollow ugc">this</a></p>
<h3>API</h3>
<p>The plugin also registers a global feature that you can use to preload any URL:</p>
<pre><code>window.prefetch('https://example.com/custom/page')
</code></pre>


Prefetch visible links

Preloads the page before the visitor clicks on the link.

Ravikumar Patel

webbymonks

<p>Preload images to get faster page loading experience. Preload Images plugin supports unlimited image urls, good for photo galleries and other image-heavy sites where you want to deliver the photos as seamlessly as possible.</p>


Preload Images

I found myself needing to pre-load some images and started to figure out how to do it by hand when I thought "If you have a need in WordPress, there's probably a plugin for it." So I went hunting and found this plugin.

Gutenberg made it a little hard to see the meta box on Pages at first, but I found it.

I REALLY like that you can preload per page/post, or have them global.  Nicely done.

Does an excellent job

Similar to DNS prefetching, image preloading/prefetching with JavaScript to get faster page loading experience.

Prefetch visible links vs Preload Images