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.

shawfactor

<p>Server Push provides significant performance gains if used judiciously. However other WordPress plugins that handle server push can actually slow your site as they push files indiscrimentally.</p>
<p>Most push all files enqueued by wordpress to the broswer and use output buffering to achieve this.</p>
<p>However this plugin does it properly by only pushing the the assets that the browser requires for the initial user interaction. Namely the scripts and css in the head of the document.</p>
<p>Note : It requires a web server that supports HTTP/2.</p>


LH HTTP/2 Server Push

Does HTTP/2 Server Push for JavaScript and CSS resources properly.

Prefetch visible links vs LH HTTP/2 Server Push