...
Simply add the images and make sure you setup the correct steps in XnConvert.
...
...
Remove background from product images
To make sure the product images appear the best they can and look amazing to the client, we need to remove the background, this is the area around the product, that is sometimes white or has shadows of the product. Think of this as having a cutout of the product. Cutting around the product leaving only the product on the image file.
...
Background remover: Remove your image background for free (photoroom.com)
Naturally, to make sure that the image has the transparency we need, it must be saved as a PNG at all times.
Batch Rename product files easily
...