Beginning with release 7.0, the maintenance of catalog-related images was moved from Management Console to Sitefinity Modules. This means that now images are stored in Sitefinity libraries. Different types of images can be found in the Ecommerce CMS:

1. General images of the website: for example, the company logo or images used on the home page or static content pages.
2. Catalog images / category nodes: images to represent catalogs / nodes.
3. Attribute images: represent attribute values. For example, in the image below images are used to represent the values of the attribute color.

4. Configure products images. They can represent the header components or the values.

5. Product images: represent the products that are sold on the website.

From the previous list, SmarterCommerce widgets support the configuration of multiple thumbnail sizes only for the Product Images. Different sizes are used to display products in a listing such as Catalog, or a smaller image for example in carousels like Recently Viewed, or a larger image for the Product Detail page. For catalog images or attribute images, a single thumbnail size can be defined.

Sitefinity has the logic to generate different thumbnail sizes for the images that are uploaded in the libraries. Each library can have its own configuration. That’s why it is important that this configuration is done to the libraries where the images related to products, catalog images, category nodes, attributes or configure products images will be uploaded. 

Note: We recommend creating a specific library depending on the thumbnail sizes that are needed. For example, create a library for products and another library for catalogs, and assign the required thumbnail sizes to it to prevent Sitefinity from generating unnecessary thumbnails.