It's nice and simple, but why no https? right now anybody on the same network could modify the code in transit to make it send the private keys somewhere. And

It's nice and simple, but why no https? right now anybody on the same network could modify the code in transit to make it send the private keys somewhere. And i would make the online page a demo, with a mandatory "download and run this offline", maybe with an advice to check signatures. Online web wallet like this are too dangerous to use for non trivial amounts of cryptocurrency. Especially with the influx of newbies for the recent spike in btc price.