How do tools like this cope with pages that are rendered by Javascript. What do the tools actually save? For instance if I save a Quora page using Firefox I can open it but if Quora is not accessible it doesn't work.
ArchiveBox is a wrapper around ~12 different extractor modules, each of which saves the page or its assets in a different way. The most relevant to JS is Singlefile, which renders the page in headless chrome and then snapshots the DOM with all assets inlined after a few seconds of JS execution. It's not perfect, but it works well even for the majority of JS-heavy sites.
