WordPress Real Thumbnail Generator: Efficiently force regenerate thumbnails in bulk (or single)


Real Thumbnail Generator allows you efficiently to regenerate your (existing) thumbnails in your media library. You can regenerate a single image or images in bulk. The plugin allows you to create a custom upload structure for thumbnails.

The regeneration of thumbnails can be up to 33% faster than other plugins like Regenerate Thumbnails or Force Regenerate Thumbnails due to chunked regeneration. Just install this plugin and it works with all your image and media files without any problems. It also supports WordPress Multisites.

Regenerate UNLIMITED thumbnails with the free version!

Free Sandbox

You want to try WordPress Real Thumbnail Generator before installing? Take a free sandbox and play around!

Create sandbox


  • WordPress 5.0 ready
  • Single regenerate images in media library table, grid and attachment view mode
  • Bulk regenerate in media library (table and grid mode)
  • Works great with PDF files
  • Regenerate your whole media library
  • Works with your existing images
  • Can be up to 33 % faster than other plugins because RTG uses less requests to regenerate
  • GPDR/DSGVO: The plugin is collecting no personal data!
  • Compatible with touch devices
  • Supports multisite

PRO Version available with additional features:

  • Skip already existing thumbnail files
  • Only regenerate a set of image sizes, that means if you have registered a new image size you can only regenerate that one. That means you can skip other image sizes.
  • Custom upload structure for thumbnail pathes and filenames (you can define a pattern with placeholders)
  • Detect unused image sizes (for example after theme switch) and delete them
  • One time payment, forever free updates
  • Fast support

→ Interested in the Pro version?


  • A new "Thumbnails" button is added to the media library
  • You can analyse all your items to recalculate the index
  • Or directly bulk rengerate your images
  • Jump from single file to single view
  • Single view
  • Available settings


  1. Go to your WordPress backend
  2. Navigate to “Plugins” > “Add New”
  3. Search for “WordPress Real Thumbnail Generator”
  4. Install and activate the plugin
  5. Go to “Media” in the left sidebar and enjoy the advanced media management with folders


What does “Custom upload structure” mean?

The custom upload structure can be easily set in the media settings of the Pro version. Here is a little example how the WP standard upload looks like:
… and after you set a custom upload structure it can look like:


19 de Febrero, 2021
Ich war schon verzweifelt. Kein anderes Tool hat funktioniert, nach dem Theme Wechsel... die anderen brachen immer wieder ab... habe nun mehere Tage an diesem Mist gehangen... doch mit dem hier habe ich meine ~17.000 Bilder für das neue Theme erzeugt. Funktionierte einfach! DANKE!
3 de Diciembre, 2020
It is a good idea, but pro is not for me, back to the real real plugin.
26 de Mayo, 2020
I was able to regenerate several thumbnails using the free version. Everything worked smoothly and as expected. I'm sure the Pro version would be worth it if I needed to regenerate all my thumbnails or do something more complicated.
12 de Mayo, 2020
Today I had to change the topic on a customer website. The new themes have different thumbnail sizes. So I had to regenerate all thumbnails. But it was more difficult than expected, because most plugins broke when I tried to regenerate several thousand images... but this one did the job without any problems. Devowl guys, why do you have a good solution for every problem? 😀
Read all 7 reviews

Contributors & Developers

“WordPress Real Thumbnail Generator: Efficiently force regenerate thumbnails in bulk (or single)” is open source software. The following people have contributed to this plugin.



You can view the changelog and release notes here.