Web-clipping: Can I closr the page/browser while "syncronizing "?

[mygwdisk 2]

when I do web clipping, it shows, clipping => syncronizing =>done.
(my environment is Japanese so maybe words above are slightly different, but meanings are same.)

And if I close the web page(s) or web browser while "synchronizing," are there not any problems?

I want to ask you about this in the case of windows and mac.
(but I recently bought a mac and have not installed/set anything with Evernote.)

P.S.
I guess that, if we know/find where data soon after finishing "clipping"（but before "syncronizing") is stored concretely and the specification of "synchronizing," the answer will be automatically clear....

Thank you for your continued help