The default main picture of the product is
uploaded. If you use multiple specifications, you will use this picture
by default or upload the main picture of each specification by
specification. It supports uploading jpg, gif, and png formats or
selecting from the picture space. It is recommended to use square
pictures with a size of 800x800 pixels or a size of no more than 1M. The
uploaded pictures will be automatically saved in the default
classification of the picture space.