The product.product Model has the following 5 fields for images:

image_1920

image_1024

image_512

image_256

image_128

I have a few of question here:

What does this number mean? Does this refer to a square image, for example 1920x1920 pixels?

What image size user should upload? Does Odoo expects 1920x1920 square image?

Does Odoo rescale images internally from 1920 to others?

Which of these images are used for hover-zoom on the website?

BTW I'm not an Odoo developer. I'm just a user. So I don't read any code.

Thanks,

Imran