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.

Sandesh

<p>HTTP/2 is the new generation HTTP protocol that provide tremendous powers the web. HTTP/2 is future of web. The most powerful feature of HTTP/2 is <em>server push</em>. Most of popular hosting providers supports to Server Push. Server Push provides significant performance gains if used judiciously.</p>
<p>Check <a href="https://http2.akamai.com/demo" rel="nofollow ugc">HTTP/2 Demo Here</a>.</p>
<p>Server Push allows the server to “bundle” assets that the client didn’t ask for.It send resources to the browser before it even realizes it needs them. This avoids the usual HTTP request/response cycle.</p>
<p>This plugin enabled WordPress to send a <code>Link:<...> rel="prefetch"</code> header to every enqueued script and style page. Is doesn’t support who output their scripts directly into the page itself. This plugin doesn’t affect any visual part of site.</p>
<p>Read more about <a href="https://blog.cloudflare.com/announcing-support-for-http-2-server-push-2/" rel="nofollow ugc">server push here</a></p>
<p>Note : It requires a web server that supports HTTP/2.</p>
<h3>WordPress 4.6 and above</h3>
<p>WordPress 4.6 introduced support for <a href="https://make.wordpress.org/core/2016/07/06/resource-hints-in-4-6/" rel="nofollow ugc">resource hints</a>.<br />
This plugin defers to WordPress 4.6 and theme/plugin developers to responsibly prefetch the right assets.</p>
<p>I’ve added a filter To restore the old behavior of resource hints on WordPress 4.6 and above. Use following filter in your functions.php file or in a custom plugin:</p>
<pre><code>`add_filter('sjh_http2_resource_hints', '__return_true');```
</code></pre>


SJ HTTP/2 Server Push Optimization

SJ HTTP/2 Server Push Optimization for JavaScript and CSS resources enqueued in the page.

Prefetch visible links vs SJ HTTP/2 Server Push Optimization