Some sites I just want to visit regularly, but I want to do so with the extra privacy protections afforded by the Tor and/or Mullvad browsers. I hesitate to add bookmarks to them, though, for fear of “breaking” that extra protection (so I just save them elsewhere and copy/paste the links in).
Does adding bookmarks to a web browser make it more fingerprintable or cause other issues?
Depends on your threat model: If you have a bookmark in your browser then anyone with physical access to your computer will know you book marked the site.
Favico loading may generate traffic to the domain you don’t intend. (The icon in the bookmark list). But the browser may cache this.
If you’re not concerned about people with physical access to your computer. It’s probably fine.