their own profile pictures rather than bypassing privacy, these are the top-rated options: Who views your Facebook profile | Facebook Help Center
🖼️ Some Chrome and Firefox extensions can pull the full resolution of a public profile picture if Facebook is serving a compressed thumbnail. They cannot, however, force a locked image to open. How to View a Private Facebook Picture - wikiHow private facebook profile picture viewer top
They simply show you what is already public (like a low-resolution thumbnail). their own profile pictures rather than bypassing privacy,