Resolution and the zoom feature
When the longest side of your image is at least 1000px, Amazon enables zoom. Below that, zoom is disabled. For the sharpest zoom, 1600px or more is recommended.
Resolution vs file size
High resolution means more pixels, which helps zoom — but watch the file size limit (under 10MB).
Frequently asked questions
What resolution enables Amazon zoom?
At least 1000px on the longest side. 1600px+ gives the cleanest zoom.
Why isn't zoom working on my listing?
The image is likely under 1000px on its longest side.
Does higher resolution help sales?
It enables zoom, which tends to improve buyer confidence and conversion.