website copy or archive website

to dump all site you can use classic software httrack.com

but if you need archive website you can user archive.is or
Wayback Machine from web.archive.org

bookmarklets to copy website:
archive is

javascript:void(open(‘http://archive.is/?run=1&url=’+encodeURIComponent(document.location)))

web.archive.org

javascript:location.href=’http://web.archive.org/save/’+location.href