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.