A: Rarely. Google caches public pages. If a photo was public for a moment and then made private, Google might have a thumbnail cache, but it will be low resolution and usually unavailable.
A: No. Facebook has never offered this feature for standard photo posts (only for Stories). Any app claiming to show you "who viewed your profile" is a scam. facebook photo viewer online
Facebook’s Graph API (Application Programming Interface) is one of the most secure in the world. Since the Cambridge Analytica scandal of 2018, Facebook has systematically closed every loophole that allowed third-party apps to scrape private data. A: Rarely
Use Facebook’s native "View As" feature for public checks, use reverse image search for detective work, and invest your energy in respecting the privacy walls Facebook has built. Frequently Asked Questions (FAQ) Q: Is there a Facebook photo viewer that works without login? A: Only for public photos. You can view public profile pictures and cover photos without logging in by Googling the person's name and "Facebook." Private albums require a friend connection. Google might have a thumbnail cache
The reality of modern social media is strict: If the owner set it to "Friends Only," only their friends can see it.
A: No. Those are downloaders. They can only download photos you already have permission to see (i.e., you are logged in and friends with the user). They cannot "unlock" hidden photos.