Checking who has viewed your Facebook profile is not a feature that is natively offered by the platform. Third-party apps and browser extensions that claim to offer this functionality may compromise your privacy and security, as they often require excessive permissions or collect your personal data.
It’s important to be cautious when using such tools and to protect your privacy by being mindful of the information you share online. Remember that your Facebook profile should only contain information that you are comfortable with being publicly available.