Imsanity vs Just Image Optimizer (2026)

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

Imsanity

Imsanity

4.9(291)

200K+ active installs

Free

Updated 1 month ago
View Imsanity
VS
Just Image Optimizer

Just Image Optimizer

4.3(6)

20 active installs

Free

Updated 7 years ago
View Just Image Optimizer

Quick Verdict

As of April 2026, Imsanity has a higher user rating (4.9/5 from 291 reviews) and leads in active installations (200K+ vs 20). Both are free WordPress plugins. Imsanity has accumulated 4.5M+ total downloads while Just Image Optimizer has 3.3K+.

Detailed Comparison

Rating
4.9/5Imsanity
Just Image Optimizer4.3/5
Total Reviews
291Imsanity
Just Image Optimizer6
Active Installs
200K+Imsanity
Just Image Optimizer20
Total Downloads
4.5M+Imsanity
Just Image Optimizer3.3K+
Support Resolution
50%Imsanity
Just Image OptimizerN/A
Last Updated
1 month agoImsanity
Just Image Optimizer7 years ago
First Released
2011Imsanity
Just Image Optimizer2018
Age
15 yearsImsanity
Just Image Optimizer8 years
WP Requires
6.6+Imsanity
Just Image Optimizer4.5+
PHP Requires
7.4+Imsanity
Just Image Optimizerfalse+
Business Model
FreeImsanity
Just Image OptimizerFree
Latest Version
2.9.0Imsanity
Just Image Optimizer1.1.3

Rating Breakdown

Imsanity

4.9/5(291 reviews)
5
95%
4
3%
3
0%
2
1%
1
1%

Just Image Optimizer

4.3/5(6 reviews)
5
83%
4
0%
3
0%
2
0%
1
17%

Recent Reviews

Imsanity Reviews

by robertgray

It works

It just works 🙂

by edgarro

The best!

Very, very useful.

by Topher

Perfect

This plugin does exactly what it says. It also works with WebP, so combined with Cimo you have a perfect scenario for a health media library.

Just Image Optimizer Reviews

No reviews yet

Frequently Asked Questions

Is Imsanity or Just Image Optimizer more popular?
Imsanity has 200K+ active installations while Just Image Optimizer has 20. Imsanity is the more widely-used plugin as of April 2026.
Which has better ratings — Imsanity or Just Image Optimizer?
Imsanity has a 4.9/5 rating from 291 reviews, while Just Image Optimizer has a 4.3/5 rating from 6 reviews.
Are Imsanity and Just Image Optimizer free?
Imsanity is free and Just Image Optimizer is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Imsanity or Just Image Optimizer?
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?
Imsanity was last updated 1 month ago and Just Image Optimizer was last updated 7 years ago.

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