Fingerprinting is a new way of tracking users across the web, similar to how companies used to track users across the web using cookies. But as cookie blocking became more prevalent, companies discovered a new way to track users across the web based on the user system hardware and software configurations, such as what browser the user has. What fonts do they use? What is their screen resolution? What kind of CPU and GPU do they have? From all of this information, a fingerprint is created for a user through which he can be identified over the internet as to what he browses over the internet, what he likes and what he doesn't, and based on such information, advertising companies display Ads to him that fit to his or her interests, and large online stores can display products based on his or her interests to maximize their sales.
The Privacy Checker from Useotools.com is a program that checks and illuminates browser privacy breaches. That way, you'll know what information is exposed to the outside world and whether or not you should be concerned. This application is extremely handy for penetration testers or hackers who are always worried about their privacy and do not want to leave any traces after completing their tasks. Aside from that, it is also beneficial for ordinary people to be mindful of what information about themselves they are disclosing to websites. To avoid such privacy leaks, we strongly advise using decent browsers such as Firefox and Brave to protect yourself from fingerprinting. Firefox is well-known for its anti-privacy stance, including its rejection of third-party requests to organizations known to participate in fingerprinting.