That limits the transfer to 1:1. Unless it is linked to from a popular site, I think you might find not many people will use it.
I created a couple of sites that let people upload any large file, all server side code, no javascript and people rarely use it. I've also created public anonymous sftp servers, but people don't use them. "too difficult".
Nowadays folks mostly use discord for chat and small images and box for bigger files because of the integration with their desktop and other clients.
