1. The longest side of Amazon's main picture must be at least 1000 pixels. When the height or width of the picture is at least 1000 pixels, the picture has a zoom function, and the seller can zoom in on the picture to view the details of the product. This function has the effect of increasing sales.

2. The shortest side of the picture (relative width or height) cannot be less than 500 pixels. Otherwise, it cannot be uploaded to the Amazon backend. If the picture is too small, it will not be convenient for buyers to view the product. It is recommended that sellers upload product pictures with a side length of more than 1001.

3. When uploading the main picture and the auxiliary picture, it is recommended to keep the size consistent, so that it will be more beautiful.

4. The picture format can use JPEG, TIFF, GIF, which can be uploaded on Amazon. It is recommended to use JPEG format. Pictures in this format are faster when uploaded.