[Login to see the link] - I'm not certain I am interpreting your request properly; however...
If your goal is to take a list of favorites from a site like SoftArchive, or any other, and save them locally as a backup...
For that there are several options:
(1) Use a mass-link copier extension, like "LinkClump" (just configure to your preference). For others interested I have recommend this extension many times in the past; it's valuable for OCH sites and drag-to-copy multiple links in one click.
(2) If they are open in tabs, use one of the many extensions that allow "copy/paste" tabs. For example, they have extensions that allow you to past 50 links and open them all as new tabs; or, just the opposite, copy the URL's of 50 open tabs, to save locally. This is valuable for people like me with too many tabs open ;-)
(3) Tools that create compiled, encapsulated web pages you can save on your local system, for offline use. For example, using some browsers you can choose to save the page as an ".mhtml" file (MIME encapsulation of the HTML document). When you go to open the page, all of the functions/images will be preserved, all within one single, embedded file (yes, including hundreds of images). The best extension for this task is "SingleFile"; it works better than the native .MHTML file-saving options offered by various browsers.
If these don't work, I could offer you some additional alternatives; however, these are my top three suggestions.
Good luck 🙂