Some tools ask you to log in with your own Facebook credentials to "authenticate" the request. This is a trap to steal your username and password. Legitimate Ways to See a Profile Picture Better
Facebook offers several privacy settings that control who can see your profile information, including: view private facebook profile picture
If the user recently changed their privacy settings, search engine web crawlers might have indexed the profile photo while it was still public. Some tools ask you to log in with
Some tech-savvy users suggest using your browser’s “Inspect Element” or “View Page Source” tool to find the hidden URL of the full-size profile picture. Historically, this worked occasionally because Facebook served the full image in a hidden div container. Today, if the profile is private, the page source only contains the low-resolution thumbnail URL. No amount of digging in your browser console will summon a high-res image that the server never sent to you. No amount of digging in your browser console
While profile pictures are generally public, users can restrict the ability to click, enlarge, or view previous profile photos.
If you genuinely need to see more of someone's Facebook profile, the only safe and legitimate options are straightforward and require their cooperation.
View Private Facebook Profile Picture: What Is Possible and What Is a Scam?