If you want to use a picture multiple times on your website, each time in different sizes, it is sufficient to upload it just once. KenticoCMS is able to resize it for you. Please consider that the size of a picture can only be decreased, not increased, though. For this reason, it is important that you upload your pictures in the maximum size you want to use on your website.

 

Page url: http://devnet.kentico.com/docs/5_5r2/ecommerceguide/index.html?images_overview.htm