I've been tossing around the idea of what a bookmarking solution would look like that would save a cache of the current page and possibly surrounding pages. May

I've been tossing around the idea of what a bookmarking solution would look like that would save a cache of the current page and possibly surrounding pages. Maybe even have the ability to highlight or make notes on the page directly. The use case would be bookmarking a page that is later updated and I was never really sure why I bookmarked it in the first place. Or possibly bookmarking pages behind a login screen.