PluginSift

Simple Lightbox vs IOptimizer – Compress, Optimize and… (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Simple Lightbox

Simple Lightbox

4.3(236)

100K+ active installs

Free

Updated 1 month ago
View Simple Lightbox
VS
IOptimizer – Compress, Optimize and…

IOptimizer – Compress, Optimize and…

0(0)

0 active installs

Free

Updated 5 years ago
View IOptimizer – Compress, Optimize and…

Quick Verdict

As of April 2026, Simple Lightbox has a higher user rating (4.3/5 from 236 reviews) and leads in active installations (100K+ vs 0). Both are free WordPress plugins. Simple Lightbox has accumulated 3.0M+ total downloads while IOptimizer – Compress, Optimize and… has 1.1K+.

Detailed Comparison

Rating
4.3/5Simple Lightbox
◄
IOptimizer – Compress, Optimize and…N/A
Total Reviews
236Simple Lightbox
◄
IOptimizer – Compress, Optimize and…0
Active Installs
100K+Simple Lightbox
◄
IOptimizer – Compress, Optimize and…0
Total Downloads
3.0M+Simple Lightbox
◄
IOptimizer – Compress, Optimize and…1.1K+
Support Resolution
0%Simple Lightbox
IOptimizer – Compress, Optimize and…N/A
Last Updated
1 month agoSimple Lightbox
◄
IOptimizer – Compress, Optimize and…5 years ago
First Released
2010Simple Lightbox
IOptimizer – Compress, Optimize and…2020
Age
16 yearsSimple Lightbox
IOptimizer – Compress, Optimize and…6 years
WP Requires
5.3+Simple Lightbox
IOptimizer – Compress, Optimize and…3.0.1+
PHP Requires
5.6.20+Simple Lightbox
IOptimizer – Compress, Optimize and…5.6+
Business Model
FreeSimple Lightbox
IOptimizer – Compress, Optimize and…Free
Latest Version
2.9.5Simple Lightbox
IOptimizer – Compress, Optimize and…1.0.3

Rating Breakdown

Simple Lightbox

4.3/5(236 reviews)
5
79%
4
4%
3
2%
2
1%
1
14%

IOptimizer – Compress, Optimize and…

0/5(0 reviews)
5
0%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Simple Lightbox Reviews

by Benjamin Stocker

Does not do anything

Just does not work. This topic was modified 6 months, 3 weeks ago by Benjamin Stocker.

by splinter1

Worked straight out of the box!

Couldn’t be simpler. Downloaded, installed, activated and now all my post images open in a lightbox. Brilliant!

by skylabb

Simple Yet Awesome

I like the simplicity of the plugin and it works with WP native image block. The ability to automatically group single images on a page or post and browse through them in the model box is great.

IOptimizer – Compress, Optimize and… Reviews

No reviews yet

Frequently Asked Questions

Is Simple Lightbox or IOptimizer – Compress, Optimize and… more popular?
Simple Lightbox has 100K+ active installations while IOptimizer – Compress, Optimize and… has 0. Simple Lightbox is the more widely-used plugin as of April 2026.
Which has better ratings — Simple Lightbox or IOptimizer – Compress, Optimize and…?
Simple Lightbox has a 4.3/5 rating from 236 reviews, while IOptimizer – Compress, Optimize and… has a 0/5 rating from 0 reviews.
Are Simple Lightbox and IOptimizer – Compress, Optimize and… free?
Simple Lightbox is free and IOptimizer – Compress, Optimize and… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Simple Lightbox or IOptimizer – Compress, Optimize and…?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Simple Lightbox was last updated 1 month ago and IOptimizer – Compress, Optimize and… was last updated 5 years ago.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.