But why have a server do it when you can use the client! (Use them to read in semi-large xlsx files and unzip and resize folders of images client side before u

But why have a server do it when you can use the client! (Use them to read in semi-large xlsx files and unzip and resize folders of images client side before uploading, really because processing them one by one on the client makes it simpler to show progress (feels like we're doing this wrong, but it works), but also saves resources for us.)