I am using both Linkding and Linkwarden self-hosted and archiving my bookmarks as HTML, PDF, and screenshot (I might be overdoing it) without the need for any additional dependency like client software or extension. Linkwarden works better at archiving things like Reddit, but now with the anti-scraping mechanisms in place it might het harder to do anyway.

I realized I really need this when one website which was a treasure trove for PowerMac technical information and assembly guides just went dark. Some of that info I could never find elsewhere. Linkrot sucks if you're in the middle of an (admittedly drawn out) personal project and your source of information vanishes with no trace. Belt and suspenders from now on. Might give Hister a try.