Using Kontainer download templates means you don’t have to worry about the end user’s capabilities. When you have specified the download formats, they will get precisely what they need.
While your images might be large TIFF files, the formatting templates offer quick access to any other format users want JPEG, PNG, high res, low res, crop, etc.
Suppose you deliver packshots to a webshop that requires a grey background instead of transparent. You set up a download template and download all those packshots with a grey background at the click of a button. Or better yet, Kontainer automatically sends new pictures to the webshop.