Stop Generating Unnecessary Thumbnails (Formerly Stop Generating Image Sizes)


Big Update

Since version 3.0 or higher, you can now regenerate thumbnails of your existing images!

When you upload an image using Media Uploader, WordPress generates multiple copies/thumbnails of that image. By default, WordPress generates 4 thumbnails-

  • Thumbnail
  • Medium
  • Medium-large
  • Large

But along with this, theme and plugin developers can register their own thumbnails. Although they may be on purpose, but sometimes they remain unused.

Think about it, unnecessary additional images are eating up your server space and slowing down your site!

Sounds like a problem? What is the solution then?
This is where our plugin comes into the picture. Just install the plugin and choose which of the imaze sizes you want to prevent from generating.

  • Works with any plugin and theme.
  • WooCommerce compatible.
  • Multisite compatible.
  • Super easy to install and configure.
  • It’s free and always will be.


  • Disable unnecessary thumbnails
  • Regenerate thumbnails
  • Help & FAQs


  1. Upload image-sizes to the /wp-content/plugins/ directory
  2. Activate the plugin through the Plugins menu in WordPress
  3. Go to Image Sizes menu from the left and choose which of the sizes you want to prevent from generating.


Does it work with multisite?

Yes, it’s fully compatible with WordPress multisite installations

Does it work with WooCommerce?

Yes, it doen.

What about my old thumbnails?

From version 3.0 and higher, you can now regenerate thumbnails of your existing images. Just go to the Regenerate Thumbnails tab and click on the Regenerate button.

My question is not answered here.

Please post on our support forum here


September 6, 2020
This works like a charm to prevent WordPress from adding lots and lots of extra thumbnails. I'd give it 5 stars, but it creates annoying extra admin menus that are not necessary.
July 16, 2020
I tried many plugins to disable image sizes and there were always some left. Not with this one. It is the best plugin I have tried
July 9, 2020
Hi, I use the Divi theme. Each media file uploaded generates about 14 different images including the original. That's a lot of space and inode usage. This plugin allows you to choose the sizes you want generated on upload. Often, I just have 2 .... one a 150x150px image for media gallery thumbnail and the original. That means I'm not generating 12 extra images that aren't used. It also allows you to regenerate images ... only those you require ... which is insanely useful ... you can get rid of tonnes of existing images that you are not using. It is a great plugin ... five stars ... try it Regards Mark
July 6, 2020
thank you so much. you saved me. my site was making 21thumbnails and slowen down my site speed. something that you didnt mention is after choosing setting you have to press regenerate to start deleting old thumbs and generate the ones needed or maybe I missed that part. thanks alot again.
July 2, 2020
Over the years, WordPress and our themes/plugins has gather 21 different types of thumbnails, so the size was increasing at an alarming speed. By disabling all thumbnails, all 6000 thumbnails are gone for good and after a bit of manual tweaking, all media are functioning as usual. Long live this plugin!
Read all 32 reviews

Contributors & Developers

“Stop Generating Unnecessary Thumbnails (Formerly Stop Generating Image Sizes)” is open source software. The following people have contributed to this plugin.


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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.



  • [fix] License server moved


  • [fix] Error fixed


  • [improve] Nag dismiss


  • [improve] Code improved


  • [improve] Code Rewritten
  • [add] Regenerate Thumbnail
  • [add] Help and FAQs
  • [improve] Improved UI and UX


  • [fix] Small fix


  • [fix] Help email
  • [improve] Better screenshot


  • [fix] JS fix
  • [add] Contact form added
  • [improve] Transliteration


  • [fix] Warning fix


  • [improve] Transliteration
  • [fix] jQuery error


  • [add] Transliteration
  • [add] Checkbox to select all


  • Initial release