I might be old school but it always seems very dubious for me to rely on a web server controled by who the f... know for such basic task that can be done more efficiently offline.

And also why is it free? Can we be sure the service won’t store every image send? Would be a nice way to gather free real word training example for a neural network so it can learn what frame contain nothing useful and what frame contain login/password. Because we can be sure that someone WILL send out login/password while network protocol will gladly be giving their good old IP adresse along...