For those wondering why having a browser based slicer is useful: teaching. The site mentions this, but I'll add my own experience that having good in-browser software like this is incredibly useful when you have a classroom full of students who a) aren't used to installing desktop software, b) are running a bunch of different operating systems (including chrome os), and c) have firewalls prevents them from installing local software anyway.

I wouldn't want online tools to be come the default (like google docs) but having them as an options is great. (I find onshape and photopea useful in this way as well).