Thumbnail is the image appearing in the thumbnail gallery or shopping cart.
4. Click Save to finish.
Small is the image used in listing pages or search results.
Base Image and Product feature image are the product Page feature image to display the product details.
3. Click on the Choose File button to upload the placeholder image(s). It is possible to use the same or different images for each role in the list.
1. Login to the backend of your Magento 2 store.
Magento 2 store allows users to save the reservation for a product image if a product with a missing image is added to the store. The replaced one is defined as the placeholder. The temporary image will be displayed on the product page until the official one is ready to be shown. By default, the placeholder is usually the Magento logo which is considered to be quite intrusive.
2. From the Admin sidebar, navigate to Stores > Catalog > Catalog > Product Image Placeholders.
Thankfully, Magento 2 allows you to replace the placeholder image with your own one. This tutorial will guide you how to do that.
Swatch Image is used in color swatch on the product detail page or category listing.