: Some "viewers" require downloading software or browser extensions that can infect your device with malware or track your online activity.
Compliance and ethics
If any website claims to unlock a profile picture, they are either lying, using an outdated exploit (patched years ago), or delivering the tiny thumbnail that was always public.
If a profile is truly locked, Facebook’s "solid steel" privacy settings prevent unauthorized access. The only safe and effective ways to see the photo are: Send a Friend Request