No, the Instagram profile picture zoom feature is only available for your own profile picture. You cannot enlarge profile pictures of other users.
Yes, there is a maximum zoom level for profile pictures on Instagram. You cannot enlarge the profile picture indefinitely, only up to a certain limit.
Yes, you can also zoom out again after zooming in on the profile picture by spreading two fingers apart.
No, zooming your profile picture does not affect its visibility to other users. The magnification is only visible to you.
No, the profile picture zoom function is not available during a live stream. You can only use them if you are on your own profile.
The instagram profilbild picture zoom feature is only available on the mobile app and cannot be used on the desktop version.