I've got a table with 20Ks rows, each row has a product image.
I'm using simple table extension to show each row image.
However I understood that if a image needed to be shown it should upload to content library before, and the content library has upload limit of 50 images in one time, what make it useless. [I'm using qliksense server]
If you have the rights to login in to the Qlik Sense Server you could just put all the files into the right directory on the server. If not you could zip the files and leave it for the Qlik administrator or server administrator in your organization to do it for you.