Works fine and does what it describes.

And sorry to hear, that Alex has passed away.

Nice Tools

Wordpress scales down very big images, adding a 'full' image with '-scaled' suffix, and stores the original file and it's name in the db. RT plugin however regens thumbails based on the 'scaled' image, so all the intermediate sizes are re-named. This can break images when combined with offloading etc.

Unless I am missing something, this '-scaled' resizing of big images is default wordpress functionality so the RT plugin should handle it properly by using the original image (using functions like wp_get_original_image_url, wp_get_original_image_path) etc, so as not to orphan a whole set of thumbnails, use the wrong full image and generate a new set of intermediate sizes.

Eg:
These are the currently registered thumbnail sizes, whether they exist for this attachment, and their filenames:

• thumbnail: 280×178 pixels (cropped to fit) 8C2A3575-scaled-280x178.jpg
• medium: 300×300 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-300x200.jpg
• medium_large: 0×0 pixels (thumbnail would be larger than original)
• large: 720×1200 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-720x480.jpg
• avatar: 180×180 pixels (cropped to fit) 8C2A3575-scaled-180x180.jpg
• 1536x1536: 1536×1536 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-1536x1024.jpg
• 2048x2048: 2048×2048 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-2048x1366.jpg
• featured-medium: 700×446 pixels (cropped to fit) 8C2A3575-scaled-700x446.jpg
• featured-large: 1398×1398 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-1398x932.jpg
• extra-large: 1598×1598 pixels (proportionally resized to fit inside dimensions) 8C2A3575-scaled-1598x1066.jpg

The attachment says it also has these thumbnail sizes but they are no longer in use by WordPress. You can probably safely have this plugin delete them, especially if you have this plugin update any posts that make use of this attachment.

• medium (old): 300×200 pixels 8C2A3575-300x200.jpg
• large (old): 720×480 pixels 8C2A3575-720x480.jpg
• thumbnail (old): 280×178 pixels 8C2A3575-280x178.jpg
• avatar (old): 180×180 pixels 8C2A3575-180x180.jpg
• 1536x1536 (old): 1536×1024 pixels 8C2A3575-1536x1024.jpg
• 2048x2048 (old): 2048×1365 pixels 8C2A3575-2048x1365.jpg
• featured-medium (old): 700×446 pixels 8C2A3575-700x446.jpg
• featured-large (old): 1398×932 pixels 8C2A3575-1398x932.jpg
• extra-large (old): 1598×1065 pixels 8C2A3575-1598x1065.jpg
• cmplz_banner_image: 350×100 pixels 8C2A3575-350x100.jpg

Very useful plugin. I have been using this plugin for the last 5 years.

It should be built-in WordPress feature. So useful!

Bonjour et merci à l'auteur

Ce plugin à sauvé mon site, ou en tout cas plusieurs heures de travail. Les images étaient présente dans le backup mais pas les miniatures. Donc je ne voyais plus rien dans la médiathèque. Et cette extension a recréé toute les mignatures !!

Il mérite les 5 etoiles

Thank you for continuing to maintain this plugin in memory of Alex Mills. And it's commendable that WP-CLI and other alternatives are mentioned, which is anything but a matter of course.

I used the plugin to regenerate featured images only after changing the theme, worked well with about 2000 images.

This WordPress plugin stands out as the most formidable one I've ever had the privilege of using.

I just regenerated the thumbnails of 11,500 images with your plugin. It took 3.5 hours and did an excellent job, thank you very much!