Name, profile picture, cover photo, and bio (if public).
It was for letting them view you.
Technically, yes. When you visit a public Facebook profile, the user is not notified. You do not need a special tool to do this. You simply need to log out or use a different browser. However, if a profile is , no "high quality viewer" can bypass Facebook’s server-side permissions. If a tool claims it can unlock private profiles, it is almost certainly a scam. facebook anonymous viewer profile high quality