ShortPixel Image Optimizer – Optimize… vs OTF Regenerate Thumbnails (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
ShortPixel Image Optimizer – Optimize…
300K+ active installs
Free
OTF Regenerate Thumbnails
4.0K+ active installs
Free
Quick Verdict
As of April 2026, OTF Regenerate Thumbnails has a higher user rating (4.6/5 from 19 reviews) while ShortPixel Image Optimizer – Optimize… leads in active installations (300K+ vs 4.0K+). Both are free WordPress plugins. ShortPixel Image Optimizer – Optimize… has accumulated 18M+ total downloads while OTF Regenerate Thumbnails has 146K+.
Detailed Comparison
| Metric | ShortPixel Image Optimizer – Optimize… | OTF Regenerate Thumbnails | |
|---|---|---|---|
| Rating | 4.5/5 | ► | 4.6/5 |
| Total Reviews | 804 | ◄ | 19 |
| Active Installs | 300K+ | ◄ | 4.0K+ |
| Total Downloads | 18M+ | ◄ | 146K+ |
| Support Resolution | 100% | N/A | |
| Last Updated | 1 week ago | ◄ | 8 years ago |
| First Released | 2014 | 2015 | |
| Age | 12 years | 11 years | |
| WP Requires | 4.8.0+ | 3.8+ | |
| PHP Requires | 7.4+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 6.4.4 | 0.3 |
Rating Breakdown
ShortPixel Image Optimizer – Optimize…
OTF Regenerate Thumbnails
Download Trends
Over the past 30 days, ShortPixel Image Optimizer – Optimize… averaged approximately 6,617 daily downloads while OTF Regenerate Thumbnails averaged 6.
Recent Reviews
ShortPixel Image Optimizer – Optimize… Reviews
Excellent plugin
Image compression is excellent. Easy to use & affordable. AI SEO for image fields is brilliant!!! Saved me many hours. No need for support (so far)… and that’s how you want it… ie. works out
great plugin!
works great and the support is great too!
Excelente Herramienta para wordpress
Una excelente herramienta totalmente recomendada This topic was modified 1 month ago by janofernandez.
OTF Regenerate Thumbnails Reviews
must-have for theme/plugins development.
just works.
Such a shame it’s only compatible up to: 4.1.13
I would love to use it…
Great Plugin to Manage Thumbnails
This plugin resizes the thumbnails properly when wordpress theme does not.
More Resize Worth Comparing
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Frequently Asked Questions
Is ShortPixel Image Optimizer – Optimize… or OTF Regenerate Thumbnails more popular?
Which has better ratings — ShortPixel Image Optimizer – Optimize… or OTF Regenerate Thumbnails?
Are ShortPixel Image Optimizer – Optimize… and OTF Regenerate Thumbnails free?
Which plugin has better support — ShortPixel Image Optimizer – Optimize… or OTF Regenerate Thumbnails?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.