It goes through and scrapes the article for you and bypasses paywall and ad blocker notices. They have an extension in the the webstore for chrome/variants that just sends any page you are on to it. Most of the time it has already been scraped and loads instantly. If not, it gets put in a queue and you'll see a bunch of text scroll for a while depending on the size of the page. Then it'll load when done. If your browser doesn't have the extension, just copy and paste the URL into the archive.is website.

https://chromewebstore.google.com/detail/archive-page/gcaimhkfmliahedmeklebabdgagipbia?hl=en-US