So I've been thinking of putting my site up again. The site will be html, with some tar files, pictures and possible audio files.

Rather than deal with web hosting, VPS's etc., I was looking into several available ways of hosting it on my hard drive, sort of. Several programs can do this, including a decentralized or distributed over time hosting of the file, so that one can be offline for a few hours and your site will still be up, with the added bonus of being censorship-resistant and harder to take down. In this day and age where anything one says can be interpreted as being offensive or wrong to someone, this last seems less like an extra feature and more like a future-proof requirement.

I've been doing research, as much as possible, without actually compiling and installing anything. This has reduced the possibilities to two: IPFS and ZeroNet.

Which is better?

Thank you.

Those are both peer-to-peer networks.
Are you sure they can be used to host websites on the "normal" WWW? Or is that not what you want?

AFAICS, for the normal WWW, you still need an IP address, a domain name pointing to that IP, and a server serving things on that IP. The server can run on your hard drive. Self-hosting is possible, but ultimately depends on our ISP keeping at least port 80 or 443 open for incoming connections.

Better is meaningless without context. You've not stated any real requirements, so how can we know which one is more suitable?

Since you've been doing as much research as possible already, what answers can be given here that you've not already seen when you did the obvious web search?