This is for proxying images that users link in chat, not for when users upload images to the service. It doesn't make sense to talk about doing this resize on the client, as the client doesn't have the image.
That is a great point. It could still be feasible to cache the image on the client, and have it do the resize. Although I probably wouldn't accept it as a client, especially if my internet cuts out halfway through.
Yes, the use-case of proxying images is a different mater. I was talking about client uploads since so many companies seem determined to waste my bandwidth and time uploading without resizing first.
