Cimo – Free Instant Image Optimizer &… vs Image Optimizer, Resizer and CDN – Sirv (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
Cimo – Free Instant Image Optimizer &…
6.0K+ active installs
Free
Image Optimizer, Resizer and CDN – Sirv
1.0K+ active installs
Free
Quick Verdict
As of April 2026, Image Optimizer, Resizer and CDN – Sirv has a higher user rating (4.9/5 from 265 reviews) while Cimo – Free Instant Image Optimizer &… leads in active installations (6.0K+ vs 1.0K+). Both are free WordPress plugins. Cimo – Free Instant Image Optimizer &… has accumulated 25K+ total downloads while Image Optimizer, Resizer and CDN – Sirv has 129K+.
Detailed Comparison
| Metric | Cimo – Free Instant Image Optimizer &… | Image Optimizer, Resizer and CDN – Sirv | |
|---|---|---|---|
| Rating | 4.8/5 | ► | 4.9/5 |
| Total Reviews | 12 | ► | 265 |
| Active Installs | 6.0K+ | ◄ | 1.0K+ |
| Total Downloads | 25K+ | ► | 129K+ |
| Support Resolution | 100% | N/A | |
| Last Updated | Yesterday | ◄ | 5 days ago |
| First Released | 2025 | 2015 | |
| Age | 1 year | 11 years | |
| WP Requires | 6.7.5+ | 3.0.1+ | |
| PHP Requires | 8.0+ | 5.6+ | |
| Business Model | Free | Free | |
| Latest Version | 1.3.1 | 8.2.2 |
Rating Breakdown
Cimo – Free Instant Image Optimizer &…
Image Optimizer, Resizer and CDN – Sirv
Download Trends
Over the past 30 days, Cimo – Free Instant Image Optimizer &… averaged approximately 269 daily downloads while Image Optimizer, Resizer and CDN – Sirv averaged 85.
Recent Reviews
Cimo – Free Instant Image Optimizer &… Reviews
Works perfect!
I really like this plugin. Set and forget! Limited options in the free version, but most of the time this is perfect.
5 star because we cannot give more
Awesome plugin, directly goes to my default install list ! Thank you for the great work !
Was 5 star, now broken. Back to 1.2.0
used to work perfectly. I wish I could find older versions, as 1.2.2 no longer automatically converts images when uploaded. never should have updated. so annoying, and now looking for a new solution.
Image Optimizer, Resizer and CDN – Sirv Reviews
I like
<span style=”background-color: rgb(48, 49, 52); color: rgb(232, 234, 237); font-family: inherit; font-size: 28px;”>It’s a good plugin</span>
Great Results
This really improved my page speed
Amazing for 360 assets
Amazing for creating and serving 360 assets
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Frequently Asked Questions
Is Cimo – Free Instant Image Optimizer &… or Image Optimizer, Resizer and CDN – Sirv more popular?
Which has better ratings — Cimo – Free Instant Image Optimizer &… or Image Optimizer, Resizer and CDN – Sirv?
Are Cimo – Free Instant Image Optimizer &… and Image Optimizer, Resizer and CDN – Sirv free?
Which plugin has better support — Cimo – Free Instant Image Optimizer &… or Image Optimizer, Resizer and CDN – Sirv?
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Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.