[Mandatum]

This won't work for WebSockets, really websites that use WebSockets require some interaction to generate the transmitted message which is often dependent on the servers response. Private websites, or websites that require a login are hard - but it can be done. Would suggest HTTrack.

[reymus]

But it's not impossible to have some tool that records all of those interactions to reproduce later. A smart enough tool could record everything since you open the site until you click save. It would not reproduce the functionality that is backend dependent, but iy sure can replicate the dom, etc. Am I missing something?

[Mandatum]

Yeah - but there's a LOT of variables that come into play for something like that. It'd likely be easier to either record it with something like BugReplay.com or video.