Many sites claiming to offer this service are "phishing" scams. They may ask you to log in with your Facebook credentials to "authenticate," which actually steals your password.

Facebook often compresses images to save space, but you can usually view a profile picture in its original or higher quality directly through the platform's official features: Official Method:

Facebook officially states that it does not allow third-party apps to track who views a profile or bypass privacy settings. Many sites claiming to be "HD viewers" are scams designed to steal login credentials or install malware. 🖼️ How to View HD Profile Pictures Legally

It was a typical Tuesday afternoon when Sarah stumbled upon an intriguing app while scrolling through her Facebook feed. The app, called "HD Profile Picture Viewer," claimed to allow users to see who had viewed their profile pictures in high definition. Out of curiosity, Sarah decided to give it a try.