There are plenty of services that put my job in a queue and simply update the page via JavaScript to show progress and deliver the end result. The better implem

There are plenty of services that put my job in a queue and simply update the page via JavaScript to show progress and deliver the end result. The better implementations identify me via session cookie and recognize me when I check back half an hour later to get my results. That's a much nicer experience than creating another account at some random service that I might never visit again.