Downloading software that promises to bypass Facebook security can infect your device with viruses or ransomware.
Most online "profile picture viewers" or "downloaders" fail on locked profiles because they rely on public API access, which is blocked by the lock feature. download facebook cover photo of locked profile
Usually, no. Only friends of the user can see the full-sized, high-resolution cover photo. Non-friends only see a restricted, smaller version. what is legally and technically possible
Here is a comprehensive look at how Facebook’s privacy system handles cover photos, what is legally and technically possible, and how to navigate this security feature. Understanding Facebook's Profile Lock Feature download facebook cover photo of locked profile