The package includes: Module.

The module scans the directory containing PrestaShop/Thirtybees images, identifies all unused ("orphan") or redundant images of Products (img/p), Categories (img/c), Brands (img/m), Suppliers (img/su), and temporary files (img/tmp) and allows you to delete them with a single click (with option to create a downloadable compressed backup, should you need to restore if).

Why there are ununsed/redundant images?
Here are some cases in which images may become ununsed/redundant:
Deleting image types on the “BO > Design > Image Settings” page. When you delete a image type, its thumbnails won’t be deleted, they will only be deleted when regenerate all thumbnails, but some people never regenerate all thumbnails.
Deleting products via a SQL or a tool or a module. If you deleted a product from back office, then images will be deleted automatically, but if you use another way to delete a product, then the product’s images may not get deleted.
High resolution images. If the “Generate high resolution images” setting on the “BO > Design > Image Settings” page is enabled, then a 2x image will be generated for every image type of every product image. 2x images may become redundant when the setting is disabled.
Watermark module. If the “Logged in customers see images without watermark” setting in the watermark is enabled, then extra images will be created, those images may become redundant.
Webp module. Webp modules generates .webp images for every image type of every product image in the /img/p/ folder, those .webp images may become redundant.