Sayful Islam

The plugin adds a floating navigation button right bottom in the footer of your site that only appears when you scroll the page down, and when clicked gently roll the site to the top. All this without any modification to your template.
<h4>Full Feature Set</h4>
<ul>
<li>Very lightweight, Total content is less than 1 kb and load when the site load</li>
<li>No dependency, Written in Vanilla JavaScript</li>
<li>Support all major browsers including Firefox, Chrome, Opera, Edge, IE9 and higher</li>
<li>Five SVG icon type</li>
<li>Two icon shape: Square or Circle</li>
<li>Unlimited Colors for background and icon</li>
</ul>

Scroll Back To Top Button

This is just a very simple plugin to have a scroll back to top button throughout your whole blog/site.

Nazmul Islam

This plugin will add a Scroll To Up button in your site footer right. Here is very easy to setup for change color option and many more. First install the plugin and let’s see.
Features: 
<ul>
<li>Easy Customization</li>
<li>Super Lightweight</li>
<li>Unlimited color Selection</li>
<li>Plugin Option Panel</li>
<li>Super easy Installation.</li>
<li>Responsive for all devices.</li>
<li>All browser supported.</li>
<li>Super Lightweight, only 60 KB.</li>
<li>Unlimited colors.</li>
<li>Works with every version of wordpress.</li>
<li>24/7 Support for free</li>
</ul>
Wanna see how it’s works? Click here : <a href="http://lumianszone.com/plugins/lz-scroll-up/" rel="nofollow ugc">LZ Scroll Bar Up Demo</a>

LZ Scroll Bar

LZ Scroll Bar Up is an awesome, Super lightweight plugin for your wordpress website

Scroll Back To Top Button vs LZ Scroll Bar