This might be a bit off-topic, but it might help.
I can recommend the FF add-on Scrapbook for personal browse-archiving of those pages you want to keep - and their files and nested sub-sections (if you want them).
For example, I have just copied this discussion thread with a single copy command.
The discussion thread runs over two "pages", but I enabled the FF add-on AP (AutoPage) before I made the copy. AP makes the pages appear as a single continuous flow of pages, with separation gaps between each "page".
The nice thing about the Scrapbook saved pages is that the folders where they reside on your disk can be indexed by WS (Windows Search), so that they then become integrated into your client-based information repository. If you have an image indexing tool scanning the same folders, then the images from the saved web pages can all be included in your image database as well. It's surprising what Scrapbook sometimes captures that you never saw on reading the original page.