Earlier quoted context omitted.
Except that I did answer as to specific toolkits - with two answers for two separate kits. You used a lot of words to make it seem otherwise. As you yourself wrote, "Ignorance is bliss, isn't it?"
> Except that I did answer as to specific toolkits - with two answers for two separate kits You din't, really. On the third attempt you said "I see our testers doing this all the time - but I don't know what libraries they use " and "various people have scripted UI exploits using selenium or appium. I just asked one of the people familiar with those two tools" This shows that you started this entire argument with ver…
https://saucelabs.com/platform/visual-testing
And a ton more: https://lmgtfy.com/?q=visual+diff+testing