Where to upload products images through ftp/ssh cp, Opencart 3

Hi everyone.
I am importing near 4000 products to a new store and I have already all the info ready for the import tool. Where should I upload the 12000 or more images. I know in old opencart versions you upload to images/data. But I am totally lost in the new version.
To which directory should I copy the product images? Also, Should I include the original size ones only and let opencart do the resizing?
Thanks in advance and forgive my bad english

from OC v.2.x on up, it's now the image/catalog/demo/.... directory.
Ernie

I would not put them in the demo folder. That folder is simply to contain the images for the demo products that were installed with OpenCart.

You can create your own folder structure under image/catalog. In fact, for 12k images, I would advise splitting them up in to various folders.