OTF Regenerate Thumbnails
Automatically regenerates your thumbnails on the fly when thumbnail sizes change.
4.6(19 reviews)
·4.0K+ active installs·Updated 8 years agoAs of April 2026, OTF Regenerate Thumbnails is a WordPress resize plugin with 4.0K+ active installations and a 4.6/5 rating from 19 reviews. It has been downloaded 146K+ times in total. Requires WordPress 3.8+ and PHP false+. Available on WordPress.org since 2015. Last updated 8 years ago — may have compatibility concerns. Downloads are up 9% this week. Top alternative: EWWW Image Optimizer.
4.6/519 reviews
4.0K+active installs
146K+total downloads
11 yearssince 2015
Overview
This plugin behaves similarly to Regenerate Thumbnails except that images are resized automatically / on the fly, when they are used. Once created, they won’t be processed again.
Your thumbnails will now resize when:
- Image Sizes in Settings > Media is modified,
- Switching themes & plugins with different thumbnail / featured image sizes
No settings pages, just install and activate and things should work right away.
Report bugs and help out in the code from the Github repository
What are you talking about?
Test it out. In your normal WordPress website set up, create a gallery using the Add Media button while editing a post or page and use thumbnails. Afterwards, check out your gallery.
Notice the size of your thumbnails, most likely they’re 150 x 150. Do you see it? Grea…
Screenshots
Ratings & Reviews
4.619 reviews
5 ★
17
4 ★
0
3 ★
0
2 ★
0
1 ★
2
Recent Reviews
must-have for theme/plugins development.
by wube·9 years ago
just works.
Such a shame it’s only compatible up to: 4.1.13
by Wendihihihi·9 years ago·1 reply
I would love to use it…
Great Plugin to Manage Thumbnails
by waqarpro·9 years ago
This plugin resizes the thumbnails properly when wordpress theme does not.
It seems like magic
by viery365·9 years ago
I’ve just used it for the first time after trying several resizing plugins and it is hard to believe how this on works. We just don’t do anything. After installing this plugin you just relax and enjoy your re-sizings:)
Front end – must have
by MortenPeterAndersen·10 years ago
a must have plugin coding themes
Download Trends
Today: 7Yesterday: 10This week: 48Period total: 3K
Compatibility
| WordPress | 3.8+ requiredTested up to 4.1.42 |
| PHP | false+ required |
Version Adoption
v0.3
100.0%
Top Alternatives to OTF Regenerate Thumbnails
Frequently Asked Questions
Changelog
0.3
- Add new image size to attachment meta so WordPress can perform actions on the image
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.