Upload a photo, cut out the subject, and set it on a soft pastel. Try peach, lilac, mint or baby blue, then download.

A pastel is any color mixed with white: peach, lilac, mint, baby blue, butter. They feel gentle, modern and friendly, and they photograph well because they do not overpower the product.
Peach (around #ffd8c2), lilac (around #e9d5ff), mint (around #c8efdc) and baby blue (around #bfdbfe) are all popular. A shop that uses one pastel across every photo looks branded and cohesive.
Pastel on pastel can look washed out. Dark green, navy, black and deep red products have the strongest contrast, and a soft shadow helps light products.
Pick any shade in the Change Background Color tool, or start from a color below. Marketplace main images usually need pure white, so use the white background tool for those.
Upload the photo, let the tool cut out the subject, then use the color picker to choose a pastel shade or enter a hex code. Download a JPG.