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Lazy Load Optimizer

By Processby

Performance & Optimization / Caching Solutions

Reviewed by Omar Dabbas

Trusted WordPress expert with 20+ years of experience evaluating plugins for the WP ecosystem.

Lazy Load Optimizer Review - In-Depth Analysis

Lazy Load Optimizer speeds up your site by lazy loading images and iframes. It enhances page load speed and improves SEO performance.

Performance Overview

WPS Score

6.68/10

User Rating

4.4/5 (based on 24+ reviews)

Active Installations

3,000+

Update Frequency

Below Average It is calculated using the weighted average of same category plugins.

Security Score

7.1 / 10 (High Risk) It is calculated using the weighted average of all versions.

What It Does

Lazy Load Optimizer is designed to improve your website's performance by lazy loading images and iframes. This technique helps to speed up page load times, which is crucial for user experience and search engine optimization.

The plugin is compatible with WooCommerce, allowing for lazy loading of product images and category images. It utilizes lazysizes, a popular and high-performance lazy loader that is SEO friendly.

With features like lazy loading for images in posts, pages, and custom post types, as well as support for image galleries and widgets, Lazy Load Optimizer provides a comprehensive solution for enhancing your site's speed. It also improves PageSpeed Insights results by addressing the issue of offscreen images.

Comparing to Alternatives

Lazy Load Optimizer is one of several lazy load plugins available, each with unique features and performance characteristics. Here are some notable alternatives to consider.

Top alternatives

Strengths

Supports lazy loading of background images.
Works well with AJAX pagination.
Reserves space for images to prevent content shifting.
Automatically converts PNG media to WebP format.
Simple interface with powerful application.

Weaknesses

Has a known high-severity security vulnerability with no fix.
Generates invalid image sources causing 403 errors.
Links to external third-party sources unnecessarily, potentially slowing sites.
Some users report it causes site errors and recommend against use.

User Sentiment Analysis

With a strong majority of 5-star ratings (79.2%) and an overall rating of 4.4, most users appreciate the plugin's features and performance. However, a minority of users (12.5%) gave 1-star reviews citing significant issues.

Positive highlights

"Best Lazy load plugin" - shayt
"Works with ajax pagination and prevents content shift" - kazmetika
"Speed page increase" - jalo399
"Great Plugin for saving time and converting images to WebP" - rmstm

Common complaints

Generates invalid image sources causing 403 errors on PNG uploads.
Unnecessary linking to external third-party sources slows down the site.
Some users strongly advise against using the plugin due to issues encountered.

Weaknesses

Security vulnerability with unauthenticated local file inclusion.
Causes 403 errors on image uploads due to invalid source code.
External resource linking may degrade site performance.
Reports of site errors and instability from some users.

Who Should Use This?

Best for

Users looking for a lazy load plugin that supports background images, AJAX pagination, and automatic WebP conversion, and who are comfortable managing potential security risks.

Not ideal for

Users who prioritize security and stability above all, or those who want a plugin without known vulnerabilities and external resource dependencies.

Pricing & Value

Free version includes

The free version includes lazy loading for images and background images, AJAX pagination support, and automatic WebP conversion for PNG media.

Final Verdict

Lazy Load Optimizer offers robust lazy loading features with strong user approval for performance and image handling capabilities. Its ability to handle background images and AJAX pagination, along with automatic WebP conversion, makes it a compelling choice for many users.

However, the plugin has a serious unresolved security vulnerability and has caused 403 errors due to invalid image sources, which may deter security-conscious users. Alternatives without these issues might be preferable for those prioritizing site security and stability.

Other Notable Features

Here are a few other notable features of this free Lazy Load Optimizer plugin.

Image Lazy Load

Lazy Load

Optimize

Screenshots

FAQ

Just activate the plugin. Additional settings is not required.

Add width and height attributes to image.

<img width="200" height="100" src="image.jpg">

In case you want to lazyload a background image via a class you can do so by using the addClasses option:

<style>         .bg-stage.lazyloaded {             background-image: url(lazyloaded-bg.jpg);         }       </style>        <div class="bg-stage lazyload">         <!-- content -->       </div>