Ask HN: How do you archive/cache full-page back-ups of your bookmarks

You've carefully curated bookmarks over the years.

This is a knowledge bank for you.

Then one day you click on one of the bookmarks, and you discover that the original page is gone, and instead, in its place, is an ad for GoDaddy.

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Is there a way for me to archive/cache full-page backups of all my bookmarks? (In some smart way. I shouldn't have to go into each Bookmark and download each page individually.)