Justin Downey

This plugin adds the <code>loading</code> attribute to IMG tags found when filtering <code>the_content()</code> to support native image lazy loading.
For more information about lazy loading images using this new native browser image attribute, check out this article: <a href="https://addyosmani.com/blog/lazy-loading/" rel="nofollow ugc">https://addyosmani.com/blog/lazy-loading/</a> and for a little more depth into what we’re doing here, check out our <a href="https://jdmdig.it/30nXp7h" rel="nofollow ugc">explainer post</a>.
Historically, to limit the impact offscreen images have on page load times, developers have needed to use a JavaScript library (like <a href="https://github.com/aFarkas/lazysizes" rel="nofollow ugc">LazySizes</a> or <a href="https://www.andreaverlicchi.eu/lazyload/" rel="nofollow ugc">Vanilla-LazyLoad</a>) in order to defer fetching these images until a user scrolls near them. What if the browser could avoid loading these offscreen images for you?
The <code>loading</code> attribute instructs a browser to defer loading offscreen images until users scroll near them. It comes in three flavors: eager, auto, and lazy. Install this plugin and you can set the first image’s loading attribute and the loading attribute for all the subsequent images sent through <code>the_content()</code> in the plugin’s settings page.
Simple is Beautiful
There is no JavaScript or CSS included in the plugin. It just works in browsers that support the new <code>loading</code> image attribute.
For browsers that don’t support this new image loading attribute, that’s ok. You can still use whatever JavaScript-based image lazy loader you want as a fallback until browser support becomes a little more mainstream.

Native Image Lazy Loading

Automatically add the new loading attribute to images within your content to support native image lazy loading.

Jumedeen khan

Mozedia

Smart LazyLoad is a fast, lightweight, and SEO-friendly lazy loading plugin for WordPress. It improves page speed and Core Web Vitals by loading images, iframes, videos, and background images only when they are about to enter the viewport.
Built with pure JavaScript, Smart Lazy Load does not rely on jQuery or other third-party libraries, keeping your site fast and bloat-free.
Unlike heavy optimization plugins, Smart LazyLoad focuses on one thing only: reducing unnecessary resource loading while maintaining compatibility, accessibility, and SEO best practices.
All features are optional — you can use the plugin with default settings or fine-tune it as needed.
<h3>Features</h3>
<ul>
<li>Lazy load images in posts, pages, widgets, thumbnails, avatars, and comments</li>
<li>Lazy load iframes and embedded videos</li>
<li>Lazy load background images from inline styles and data attributes</li>
<li>Optional YouTube iframe replacement with video thumbnails</li>
<li>Intelligent first-image skipping for better LCP scores</li>
<li>Supports both JavaScript-based and native browser lazy loading</li>
<li>Inline plugin CSS and JavaScript (optional)</li>
<li>Option to disable lazy loading for logged-in users</li>
<li>Fully responsive and mobile-friendly</li>
<li>SEO-friendly with noscript fallbacks</li>
<li>Accessibility-aware</li>
<li>Pure JavaScript (no jQuery dependency)</li>
<li>Lightweight and performance-focused</li>
<li>Open source and available on <a href="https://github.com/jumedeenkhan/lazy-load-for-images" rel="nofollow ugc">GitHub</a></li>
</ul>
<h3>Configuration</h3>
You can configure the plugin from:
Settings → LazyLoad
Available options include:
<ul>
<li>Enable or disable lazy loading</li>
<li>Lazy load images, iframes, and videos</li>
<li>Enable background image lazy loading</li>
<li>Replace YouTube videos with thumbnails</li>
<li>Adjust lazy load threshold</li>
<li>Enable native browser lazy loading</li>
<li>Inline plugin CSS and JavaScript</li>
<li>Disable lazy loading for logged-in users</li>
</ul>
Need more help?
For detailed documentation, usage examples, available filters, and advanced configuration options for Smart LazyLoad are available.
See the <a href="https://www.mozedia.com/lazy-load-wordpress/" rel="nofollow ugc">Lazy Load Configuration Guide</a>
Support
We are here to help. Feel free to open a new thread on the <a href="https://wordpress.org/support/plugin/lazy-load-for-images/" rel="ugc">Support Forum</a>.

Smart LazyLoad – Lazy Load Images, Videos and Iframes

A must-have for the fastest page load time, save bandwidth cost. Just install and activate and your site is ready to load with Rocket speed. Awesome work, Highly recommended! 

💯 Excellent plugin, Improves Page Load time Instantly ⚡

The best free, lightweight lazy load plugin for WordPress. Lazy loading images, videos, and iframes to improve performance and Core Web Vitals scores.

Native Image Lazy Loading vs Smart LazyLoad – Lazy Load Images, Videos and Iframes