Check the listing requirements for the image shape, minimum pixels and file size. Keep an original full-resolution photo for future listings. Make a working copy for each marketplace or storefront.
Prepare the file
Crop using the shape the store expects. Leave space around the product so an automated crop has room to work, and keep important details inside the center of the frame. After cropping, resize with the aspect ratio locked. Use consistent framing across images in the same catalog.
Check the finished copy
Export a JPEG if the store accepts it. Open the listing preview on mobile and check that the product is clear in both the small thumbnail and the larger view. If the preview chops off a handle, strap or edge, go back to the master photo and make a looser crop.