What matters
Amazon Main Product Image dimensions at a glance
Amazon main images need to be sharp, simple, and large enough to support zoom. The 2000×2000 size is the sweet spot for all gallery and search display contexts.
A 2000×2000 source gives a safe square canvas for product photography and preserves clarity when Amazon scales the asset across placements.
Images under 1000px disable zoom. Non-white backgrounds on main images can get the listing suppressed. Small products in large frames look lost in search results.