The main picture should be 750*750 or larger.

1. Alibaba's regulations are 200K, 600*600 is recommended, and the maximum should not exceed 800*800.

2. The first picture should be 750*750 or larger, and the second and third pictures should be larger than 320*320.

3. If the size of the published product picture is illegal, it may be that the size is wrong. Too large or too small will prompt that it is illegal. When publishing a product on a computer, you can generally upload 4 to 6 pictures from different angles for the main picture. Recommended main picture size: 700 * 700. Main picture size: within 500K, but don't compress it too small, otherwise the picture will be distorted.