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.

Free Test Drive

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

Create test drive


  • 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 (WP 4.7+ required)
  • 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:

  • Bulk regenerate more than 300 images (unlimited)
  • 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

Preguntas frecuentes

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:


26 de mayo de 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 de 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? 😀
9 de septiembre de 2019
This review is for the Premium version! The task was to migrate a Joomla! page to WordPress and the customers were not happy with WordPress´ media file management. They used to create a physical folder per blog post, add the images for this post and create a slider out of all images in this folder. WordPress had to be tricked into that sort of media management with the help of @mguenter´s plugins "Real Media Library" (free) "Physical Custom Upload Folder" (premium) and Real Thumbnail Generator" (premium). What is special about this plugin? There are a few plugins out there that allow generation of a physical upload folder within /wp-content/uploads. The thing is: WordPress automatically generates thumbnails for every image within the folders and adds them to the folder. So, the sliders contain not only the images themselves, but the thumbnails as a "bonus". This plugin allowed me to generate the thumbnails in a sub-folder, so they are not added to the sliders. Yay! Works perfectly well, saved me some coding time and is, as far as I found, the only plugin to do so.
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Colaboradores y desarrolladores

«WordPress Real Thumbnail Generator: Efficiently force regenerate thumbnails in bulk (or single)» es un software de código abierto. Las siguientes personas han colaborado con este plugin.


Registro de cambios

You can view the changelog and release notes here.