mores

MetaBackGround will let you specify a post background by adding a custom field. This is not the sorcerer’s stone, but some users are not comfortable with php and editing of theme files, so all they need to do is install this plugin.

MetaBackGround

I once created this plugin for someone ... they needed to set backgrounds on a per-post basis.

smartparallax

SmartParallax adds true scroll-linked parallax scroll effects to WordPress — built for performance, not gimmicks.
Unlike many animation plugins, SmartParallax does not run time-based animations. 
All motion is directly tied to the user’s scroll position. 
If the user doesn’t scroll, nothing moves.
This approach results in excellent performance, smooth motion and stable Core Web Vitals — even on mobile devices.
You don’t write JavaScript. 
You don’t configure timelines. 
You simply add a CSS class to a block, image or section — and the parallax scroll effect works instantly.
SmartParallax uses a small, dependency-free JavaScript engine and GPU-accelerated transforms. 
There is no jQuery, no frameworks and no heavy animation libraries involved.
The plugin works out of the box with: 
Gutenberg (Block Editor), Full Site Editing (FSE), Elementor (scroll effects & parallax), Bricks, Divi, Oxygen, WPBakery and most modern WordPress themes.
Perfect for:
<ul>
<li>Parallax scroll sections</li>
<li>Scroll animations in Elementor</li>
<li>Gutenberg scroll effects</li>
<li>Background parallax images</li>
<li>Lightweight animation on scroll</li>
</ul>
Live demo: See all free effects in action. 
<a href="https://smartparallax.com/wordpress-parallax-plugin-demo/" rel="nofollow ugc">https://smartparallax.com/wordpress-parallax-plugin-demo/</a>
<h3>Why SmartParallax</h3>
SmartParallax is built for developers and designers who want clean, scroll-driven motion without sacrificing performance or Core Web Vitals.
<ul>
<li>True scroll-linked motion (no time-based animations)</li>
<li>No JavaScript configuration required</li>
<li>Extremely lightweight (only a few KB)</li>
<li>No jQuery, no frameworks, no dependencies</li>
<li>Optimized for mobile devices</li>
<li>Designed to preserve Core Web Vitals and PageSpeed scores</li>
</ul>
<h3>Available Classes</h3>
 Class 
 Description
 <code>.parallax-image</code> 
 Moves only the background image
 <code>.parallax-container</code> 
 Moves the entire block or section
 <code>.parallax-x</code> 
 Enables horizontal movement
 <code>.parallax-01 … 10</code> 
 Controls movement strength
 <code>.parallax--01 … 10</code> 
 Inverted movement direction
 <code>.parallax-[…]-s</code> 
 Stops movement at the center of the viewport
Examples: 
* <code>.parallax-02</code> – subtle depth 
* <code>.parallax-05</code> – stronger parallax
<h3>Privacy</h3>
SmartParallax optionally sends anonymous usage data when the administrator explicitly opts in.
Data sent: 
– Plugin version 
– WordPress version 
– PHP version 
– Site locale 
– Activation / deactivation status
No personal data, IP addresses or site URLs are collected or stored.
Tracking is completely optional and can be disabled at any time in the plugin settings.
Privacy Policy: 
<a href="https://smartparallax.com/datenschutzerklaerung/" rel="nofollow ugc">https://smartparallax.com/datenschutzerklaerung/</a>
<h3>License</h3>
SmartParallax is open-source software licensed under the GPLv2 or later.

SmartParallax – Parallax Scroll Effects & Scroll Animations

Create true parallax scroll effects and smooth scroll animations in WordPress — lightweight, scroll-linked and optimized for performance.

MetaBackGround vs SmartParallax – Parallax Scroll Effects & Scroll Animations