PluginSift

Optimus – WordPress Image Optimizer vs ShortPixel Adaptive Images – WebP… (2026)

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

Optimus – WordPress Image Optimizer

Optimus – WordPress Image Optimizer

4.2(68)

30K+ active installs

Free

Updated 1 month ago
View Optimus – WordPress Image Optimizer
VS
ShortPixel Adaptive Images – WebP…

ShortPixel Adaptive Images – WebP…

4.8(143)

10K+ active installs

Free

Updated 2 weeks ago
View ShortPixel Adaptive Images – WebP…

Quick Verdict

As of April 2026, ShortPixel Adaptive Images – WebP… has a higher user rating (4.8/5 from 143 reviews) while Optimus – WordPress Image Optimizer leads in active installations (30K+ vs 10K+). Both are free WordPress plugins. Optimus – WordPress Image Optimizer has accumulated 694K+ total downloads while ShortPixel Adaptive Images – WebP… has 1.5M+.

Detailed Comparison

Rating
4.2/5Optimus – WordPress Image Optimizer
►
ShortPixel Adaptive Images – WebP…4.8/5
Total Reviews
68Optimus – WordPress Image Optimizer
►
ShortPixel Adaptive Images – WebP…143
Active Installs
30K+Optimus – WordPress Image Optimizer
◄
ShortPixel Adaptive Images – WebP…10K+
Total Downloads
694K+Optimus – WordPress Image Optimizer
►
ShortPixel Adaptive Images – WebP…1.5M+
Support Resolution
N/AOptimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…100%
Last Updated
1 month agoOptimus – WordPress Image Optimizer
►
ShortPixel Adaptive Images – WebP…2 weeks ago
First Released
2012Optimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…2018
Age
14 yearsOptimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…8 years
WP Requires
4.6+Optimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…4.7+
PHP Requires
5.6+Optimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…5.6.40+
Business Model
FreeOptimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…Free
Latest Version
1.6.3Optimus – WordPress Image Optimizer
ShortPixel Adaptive Images – WebP…3.11.2

Rating Breakdown

Optimus – WordPress Image Optimizer

4.2/5(68 reviews)
5
75%
4
4%
3
1%
2
4%
1
15%

ShortPixel Adaptive Images – WebP…

4.8/5(143 reviews)
5
93%
4
1%
3
3%
2
0%
1
3%

Recent Reviews

Optimus – WordPress Image Optimizer Reviews

by alexio

Not very effective

The 100kb limit of the free version is very limiting and mostly serves like a demo. My disappointment was that even though i had the premium version and i optimized the images, google pagespeed still

by Coworking à Vannes

Fait le job

Pourquoi perdre du temps quand un outil peut vous en faire gagner… Si vous avez des images trop lourdes qui peuvent ralentir votre site, c’est l’outil idéal. This topic was modified 7 years, 2

by Panos Sakalakis

You should purchase this plugin!

A simple, fast and easy to use plugin that has great features to offer. I’ve purchased a key for the Pro version a few days ago and converted all my pictures to webP. My blog is faster than ever. If y

ShortPixel Adaptive Images – WebP… Reviews

by spinquads

Shortpixel AI, a hassle free plugin that greatly improves PageSpeed score.

As the title says, Pagespeed Insights gave a score of 92 on mobile and 99 to 100 on desktop with no visible loss of quality on the web page. What I also like is the very reasonable one time pricing an

by jeremywardkcc

Great plugin and great team!

I’ve recently added SPIO across all our WordPress sites. (I work for a NFP managing 10 of their sites.) I’m impressed by ShortPixel’s compression and performance. Adrian and the team have offered grea

by Tamhas

Slowed my site until I deleted it and removed DB Table.

Not here to diss you guys. Your image optimiser plugin is great!! But this one, it didn’t speed up my site, but rather made it super slow on first load. Maybe my error even. BUT when I turned off plug

Frequently Asked Questions

Is Optimus – WordPress Image Optimizer or ShortPixel Adaptive Images – WebP… more popular?
Optimus – WordPress Image Optimizer has 30K+ active installations while ShortPixel Adaptive Images – WebP… has 10K+. Optimus – WordPress Image Optimizer is the more widely-used plugin as of April 2026.
Which has better ratings — Optimus – WordPress Image Optimizer or ShortPixel Adaptive Images – WebP…?
Optimus – WordPress Image Optimizer has a 4.2/5 rating from 68 reviews, while ShortPixel Adaptive Images – WebP… has a 4.8/5 rating from 143 reviews.
Are Optimus – WordPress Image Optimizer and ShortPixel Adaptive Images – WebP… free?
Optimus – WordPress Image Optimizer is free and ShortPixel Adaptive Images – WebP… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Optimus – WordPress Image Optimizer or ShortPixel Adaptive Images – WebP…?
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?
Optimus – WordPress Image Optimizer was last updated 1 month ago and ShortPixel Adaptive Images – WebP… was last updated 2 weeks ago.

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