Amazon requires high-quality pictures and must be viewed from different positions like the front, side, upper and bottom. Also, all pictures must be in white background. Cropping images to remove all the sides that are unnecessary. Image size must be 1000 pixels or larger in either height or width thus it will enable zoom function on the webpage. And the smallest file needs to be 500 pixels on the longest side.
For eBay listing, it is required to maintain a minimum size of about 500 pixels for the longest side. Large enough photos and also detailed images are the best listing uploading quality. A minimum length of 500 pixels for the longest side and high to medium photo quality is required. Borders around the images aren’t allowed to upload pictures.