AJAX Thumbnail Rebuild vs OTF Regenerate Thumbnails (2026)
Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.
OTF Regenerate Thumbnails
4.0K+ active installs
Free
Quick Verdict
As of April 2026, AJAX Thumbnail Rebuild has a higher user rating (4.8/5 from 90 reviews) and leads in active installations (30K+ vs 4.0K+). Both are free WordPress plugins. AJAX Thumbnail Rebuild has accumulated 851K+ total downloads while OTF Regenerate Thumbnails has 146K+.
Detailed Comparison
| Metric | AJAX Thumbnail Rebuild | OTF Regenerate Thumbnails | |
|---|---|---|---|
| Rating | 4.8/5 | ◄ | 4.6/5 |
| Total Reviews | 90 | ◄ | 19 |
| Active Installs | 30K+ | ◄ | 4.0K+ |
| Total Downloads | 851K+ | ◄ | 146K+ |
| Support Resolution | N/A | N/A | |
| Last Updated | 2 years ago | ◄ | 8 years ago |
| First Released | 2009 | 2015 | |
| Age | 17 years | 11 years | |
| WP Requires | 2.8+ | 3.8+ | |
| PHP Requires | false+ | false+ | |
| Business Model | Free | Free | |
| Latest Version | 1.14 | 0.3 |
Rating Breakdown
AJAX Thumbnail Rebuild
OTF Regenerate Thumbnails
Download Trends
Over the past 30 days, AJAX Thumbnail Rebuild averaged approximately 63 daily downloads while OTF Regenerate Thumbnails averaged 6.
Recent Reviews
AJAX Thumbnail Rebuild Reviews
Still Works Great!
With over 4K images on my site, it’s impossible to get “Regenerate Thumbnails” in Woocommerce to complete. This takes care of it in a couple hours without taking a break. Thank you! Running WordP
Seems to be a dead plugin
No replies to support queries for over a year so it seems like a dead plugin. hopefully you backup your site before trying this.
This should be in Core
This is a great plugin, easy to use and it should be in Core in some way or form. It’s ridiculous that Woo does automatic thumbnail regeneration, but WP Core doesn’t. Thanks for this.
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 Regenerate Worth Comparing
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Real Thumbnail Generator is a WordPress plugin for regenerating thumbnails. It is beginner-friendly, SEO-optimised and GDPR-compliant.
Frequently Asked Questions
Is AJAX Thumbnail Rebuild or OTF Regenerate Thumbnails more popular?
Which has better ratings — AJAX Thumbnail Rebuild or OTF Regenerate Thumbnails?
Are AJAX Thumbnail Rebuild and OTF Regenerate Thumbnails free?
Which plugin has better support — AJAX Thumbnail Rebuild or OTF Regenerate Thumbnails?
Which plugin is updated more frequently?
Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.