Use a3 Lazy Load for images, videos, iframes that are not lazy loaded by WordPress core. Instantly improve your sites load time and dramatically impro …
| Last updated | July 8, 2026Updated in the last year |
|---|---|
| Tested up to | WordPress 7.0.8Older than WordPress 7.1.4, the current release |
| Needs WordPress | 6.0 or newer |
| Needs PHP | Not stated |
| First published | December 20, 2014 |
| Support, last two months | 0 of 1 threads resolved (0%) |
4.3 / 5 from 148 reviews
| 5 stars | 116 |
|---|---|
| 4 stars | 5 |
| 3 stars | 4 |
| 2 stars | 4 |
| 1 star | 19 |
a3 Lazy Load is a Mobile Oriented, very simple to use plugin that will speed up sites page load speed. The more content heavy your site the better the plugin will perform and the more you will see the improvements in performance. See this demo of a page with 1,000 images (yes 1,000 images) to load.
a3 Lazy Load is inspired by and powered by the ressio Lazy-Load-xt JavaScript.
100% COMPATABLE WITH WORDPRESS 6.0
WordPress 5.5 introduced lazy loading for all images uploaded to a sites media library and 5.7 introduces Core lazy load for iframes and 5.9 contained performance enhancements. a3 Lazy Load Image options work side-by-side with these, but then enhances it by lazy loading all the images loaded from outside of the media library, or on older browsers that do not support the new WP attribute and any iframes or videos that are not lazy loaded by WordPress.
DISABLE WORDPRESS LAZY LOAD
The plugin includes an option to completely disable WordPress Core Lazy Load if that is what you want to do.
IMAGE LAZY LOAD
For more flexibility when ON you can choose to ON | OFF lazy load all images that are not loaded from the WordPress media Library in:
HORIZONTAL SCROLL
The opening of the plugin's own description. The full text, installation notes and changelog are on its WordPress.org page.
Images, Videos / iframes can be excluded from Lazy Load by existing classnames or if none exist exclusions can be done manually via exclusion skip-lazy classname or data-skip-lazy attribute. Examples
Exclude by classname <img class="skip-lazy"> , <video class="skip-lazy">
Exclude by attribute <img data-skip-lazy> , <video data-skip-lazy>
a3 Lazy Load can only be applied to objects that are added using core WordPress functions. If your theme or a plugin developer adds objects such as images or videos via a custom written function, a3 lazy Load cannot know what that custom function is and hence cannot Lazy Load the object.
Apply lazy load for images in content.
a3_lazy_load_images
Example:
apply_filters( ‘a3_lazy_load_images’, $your_content, null );
Apply lazy load for videos and iframe from content.
a3_lazy_load_videos
Example:
apply_filters( ‘a3_lazy_load_videos’, $your_content, null );
Apply lazy load for all images, videos and iframe from content
a3_lazy_load_html
Example:
Filter tags to add to class name of theme to exclude lazy load on images or videos.
a3_lazy_load_skip_images_classes
a3_lazy_load_skip_videos_classes
#386 by installs
The best free lazy load plugin for WordPress. Lazy load images, videos, and iframes to improve performance and Core Web Vitals scores.
Read from the WordPress.org plugin API on , when WordPress 7.1.4 was the current release. WordPress.org rounds active installs into buckets. These are the directory's figures, not my verdict, and I haven't tested this plugin.