The only reliable method is using Facebook’s own features.
A Facebook profile picture viewer is a tool or software that allows you to see who has viewed your Facebook profile picture or enlarge someone else's profile picture. These tools can be useful for various reasons, such as tracking your online presence, monitoring your digital footprint, or simply satisfying your curiosity. facebook profile picture viewer best top
For public photos, you can often click the photo and use the double-sided arrow or Options > Enter Fullscreen in your browser to see it in full quality. The only reliable method is using Facebook’s own features