The short version: Fathom runs on close to zero cookies.
Our reading counts are cookieless — we get a rough sense of how many people read Fathom without dropping a tracking cookie on you. The only cookies you might pick up are the basic ones our host uses to keep the site online and block bad traffic.
We don't set advertising or cross-site tracking cookies, because we don't do advertising or cross-site tracking.
There's nothing here profiling you, so there's nothing to switch off. Your browser can still block or clear cookies whenever you like — nothing on Fathom will break if you do.