Imsanity vs Just Image Optimizer (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
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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
| Metric | Imsanity | Just Image Optimizer | |
|---|---|---|---|
| Rating | 4.9/5 | ◄ | 4.3/5 |
| Total Reviews | 291 | ◄ | 6 |
| Active Installs | 200K+ | ◄ | 20 |
| Total Downloads | 4.5M+ | ◄ | 3.3K+ |
| Support Resolution | 50% | N/A | |
| Last Updated | 1 month ago | ◄ | 7 years ago |
| First Released | 2011 | 2018 | |
| Age | 15 years | 8 years | |
| WP Requires | 6.6+ | 4.5+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 2.9.0 | 1.1.3 |
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%
Download Trends
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.