smartparallax

SmartParallax adds smooth, GPU-accelerated parallax motion to WordPress blocks and sections. 
All effects are powered by CSS transforms combined with a lightweight JavaScript engine to ensure fluid performance on modern devices.
The plugin integrates seamlessly into any theme or page builder.
<h4>Highlights</h4>
<ul>
<li>Smooth parallax motion based on scroll position</li>
<li>Background parallax via <code>.parallax-image</code></li>
<li>Container parallax via <code>.parallax-container</code></li>
<li>Horizontal motion using <code>.parallax-x</code></li>
<li>Speed modifiers (<code>parallax-3</code>, <code>parallax--05</code>, etc.)</li>
<li>Optional stop-sensitive behavior using <code>-s</code> modifiers</li>
<li>Automatic background-layer injection</li>
<li>GPU-accelerated transforms</li>
<li>Works with Gutenberg, Elementor, Bricks und mehr</li>
</ul>
Full documentation, examples and demo pages available at: 
https://smartparallax.com/
<h3>Available Classes</h3>
 Class 
 Description
 <code>.parallax-image</code> 
 Creates a moving background layer
 <code>.parallax-container</code> 
 Moves an entire block or section
 <code>.parallax-x</code> 
 Switches movement from vertical to horizontal
 <code>.parallax-(--)</code> 
 Adjusts speed (e.g. <code>.parallax-05</code> or <code>.parallax--03</code>)
 <code>.parallax-[…]-s</code> 
 Stop-Sensitive Motion: stops when element leaves viewport center
<h3>License</h3>
SmartParallax is open-source software licensed under the <a href="https://www.gnu.org/licenses/gpl-2.0.html" rel="nofollow ugc">GPLv2 or later</a>.

Smart Parallax

Lightweight GPU-optimized parallax animation system for WordPress blocks and containers.

tommygeorge

Super Simple jQuery Parallax Background enables a parallax effect with your theme’s background image. Just set a background image in your theme’s “customize” options (optionally setting it to “fixed” position) and activate this plugin. Done. “It just works.”
It relies on jQuery, which comes with WordPress and is probably built into your theme. Tested and works with the “Twenty Twelve” theme out of the box.
Looks best with seamlessly-tiling background images.

Super Simple jQuery Parallax Background

For themes with background images, creates a parallax effect when scrolling. Super simple; no configuration. Just works.

Smart Parallax vs Super Simple jQuery Parallax Background