Force Regenerate Thumbnails

Absolutely great plugin. Fixed my bad looking woocommerce thumbnails that were generated with wrong dimensions in the past.

I was completely stuck—my site was overloaded with heavy PNG images and more than 100,000 unnecessary thumbnails. I was seriously considering deleting everything and rebuilding the whole site from scratch. Every thumbnail regeneration plugin I tried would either freeze, fail to delete the old thumbnails, or just generate even more useless image sizes.

Then I found this plugin, and honestly, it was a game changer.

I used it together with two other tools:
• Image Sizes Controller by GrandPlugins — I disabled every thumbnail size I didn’t need and kept only the one that mattered. Before that, WordPress was generating around 10 different sizes for each image.
• Plus WebP or AVIF by Katsushi Kawamori — This one converts any uploaded image to WebP with adjustable quality and deletes the original file. Simply perfect.

Now my website is faster than a bullet. After installing and configuring the other two plugins, I tested everything and then started the full thumbnail regeneration process using Force Regenerate Thumbnails. To my surprise, it worked flawlessly: no freezing, no errors, and the whole process was impressively fast. All the old oversized images were completely removed, and every thumbnail was regenerated exactly as needed.

A HUGE THANK YOU to the developer of this plugin. You genuinely saved my project. Wishing you all the good things in the world!

It works very well! Thank you!!

The plugin regenerates the image sizes that are registered. It deletes the unregistered ones AND it also seems to repair the meta data. Impressive! Thank you very much!

After trying other plugins unsuccessfully, this one worked!

Unlike other plugins that claim doing the same, this one works and still every image keeps being displayed correctly on the site.

Thanks for this great tool!

Von aktuell ca. 38.000 Bildern werden immer nur um die 50 bearbeitet und davon kommt abwechselnd bei 10 bis 20 ein Fehler. Da die Fehler immer bei anderen Bildern kommen, ist das auch ein Fehler vom Plugin.

Nach den 50 bis 60 Bildern geht es dann gar nicht mehr weiter.

Fazit: Leider komplett unbrauchbar das Plugin.

Doing job very good. Thank you.

After a site migration I could not see hundrends of images. I regenerate all the images et voilá! Thank you.

When using third-party themes, it's a usual practice to remove unnecessary image sizes and regenerate existing thumbnails (I've recently used a theme with 15+ new image sizes registered, yikes). I like that I can easily remove image sizes with Perfect Images plugin, however it doesn't allow me to actually delete old image sizes, but this plugin does exactly that with one button - nothing else is needed, honestly.