There is a safe option. I don't know if it is available in browser version tho.
i think it is availble in the browser version its a 50/50 if it works tho
That may be true, but I think it is probably gone once you delete your cookies and stuff. And people like me tend to clean their browser every few weeks.
no you have to leave the web page open if you close it you lose everything
i leave it open and my saves ae there it depend on the game tho