Alex Volkov

WP Nice Loader allows you control over page preloader, font size, themes and much more.
<h4>A few notes about the plugin:</h4>
<ul>
<li>You can easily create nice page loaders with one click</li>
<li>Control over the title, subtitle and loader logo</li>
<li>Change text colors</li>
<li>13 loaders themes (9 of them based on spinkit by <a href="https://twitter.com/tobiasahlin" title="@tobiasahlin" rel="nofollow ugc">@tobiasahlin</a> – <a href="http://tobiasahlin.com/spinkit/" title="Spinkit DEMO" rel="nofollow ugc">DEMO</a> )</li>
</ul>

WP Nice Loader

WP Nice Loader allows you control over page preloader, font size, themes and more.

WPJutsu

Add smooth page transitions with logos, animations, and custom styles — no coding required.
Demos 
<a href="https://www.wp-jutsu.com/plugins/pagefluent/" rel="nofollow ugc">Click to see a demo of all transitions</a>
Free version features
6 transitions effects available :
<ul>
<li>Fade effect</li>
<li>Slide to top effect</li>
<li>Slide to right effect</li>
<li>Slide to bottom effect</li>
<li>Slide to left effect</li>
<li>Glassmorphism effect</li>
<li>Choose the color of your transition effect</li>
</ul>
Add a loader to your transition
<ul>
<li>Spinner effect</li>
<li>Choose the color of your spinner</li>
</ul>
Pro version features
<ul>
<li>Global : Activate transitions only on the first page visited.</li>
<li>Transitions : unlock more than 15 effects.</li>
<li>Transitions : select your custom color.</li>
<li>Transitions : Customize waiting and timing transitions.</li>
<li>Loaders : unlock more than 10 loaders.</li>
<li>Loaders : select your custom color.</li>
<li>Loaders : customize loader with your own logo.</li>
</ul>

PageFluent

Increase user experience on your site with nice pages transitions and other amazing effects.

WP Nice Loader vs PageFluent