Browser Fingerprinting: What is it?

Have you ever questioned how websites can monitor your online activity even when you are using private browsing mode or have cookies turned off? Browser fingerprinting is one method that data brokers and advertisers are using more and more of.

Browser fingerprinting involves gathering data on the operating system, browser version, screen resolution, and installed plugins of your device as well as the configuration of your browser. Websites are able to identify you and your online behavior by combining these facts with other information, like your IP address and browsing history.

In this article, we’ll look at browser fingerprinting, what it is, how it works, and why it’s a privacy risk. We’ll also give you some pointers on how to protect yourself against browser fingerprinting and maintain your online anonymity.

What is Browser Fingerprinting?

Websites use a method called “browser fingerprinting” to identify and track users based on the particulars of their device and browser configuration. Browser fingerprints are created by gathering data about your browser settings, extensions, and other elements that can be used to identify you, as opposed to cookies, which are small text files saved on your computer.

How Does Browser Fingerprinting Work?

The way browser fingerprinting operates is by gathering a wealth of data regarding your device and browser settings. This may consist of:

  • Browser type and version
  • Operating system and version
  • Screen resolution and color depth
  • Installed fonts and plugins
  • Time zone and language settings
  • Hardware configurations, such as graphics card and CPU
  • IP address and network information

This information is collected automatically by websites using scripts and other tools, and can be used to create a unique identifier for your device and browser. By comparing this identifier with other data points, such as your browsing history and IP address, websites can track your online activity and build a profile of your interests and behavior.

Types of Browser Fingerprinting Techniques

There are two main types of browser fingerprinting techniques: active fingerprinting and passive fingerprinting.

Active Fingerprinting

Active fingerprinting involves actively probing the user’s browser to collect information. This technique involves running scripts on the user’s computer that collects information about the browser’s configuration. This information is then used to create a unique fingerprint.

Passive Fingerprinting

Passive fingerprinting involves collecting information about the browser passively, without the user’s knowledge. This technique involves using various tracking techniques, such as canvas fingerprinting and audio fingerprinting, to collect information about the browser’s configuration.

What information is collected through Browser Fingerprinting?

Browser fingerprinting collects a wide range of information about the user’s browser configuration, including:

  • Browser version
  • Operating system
  • Installed fonts
  • Screen resolution
  • Installed plug-ins and extensions
  • Time zone
  • Language settings
  • Network settings
  • Hardware and software configurations

Why is Browser Fingerprinting used?

Browser fingerprinting is used by websites for a variety of reasons, including:

  • Online tracking
  • Fraud prevention
  • Personalization of website content and services
  • Analytics and statistics tracking

The Impact of Browser Fingerprinting on Your Privacy

While browser fingerprinting has legitimate uses, it also poses a significant threat to online privacy. Here are some ways that browser fingerprinting can impact your privacy:

How Browser Fingerprinting Can Be Used to Track You Online

Browser fingerprinting can be used to track your online activity across different sites and devices. Websites can use your fingerprint to identify you even if you clear your cookies or use private browsing modes. This means that your online activity can be tracked and monitored without your knowledge or consent.

The Risks of Browser Fingerprinting

Browser fingerprinting poses several risks to your online privacy, including:

  • Identification and tracking: Browser fingerprinting can be used to identify and track you online, even if you try to remain anonymous. This can be used to build a detailed profile of your online activity, which can be used for targeted advertising, fraud, or other malicious purposes.
  • Security risks: Browser fingerprinting can be used to collect sensitive information about your device, such as your IP address, operating system, and browser version. This information can be used by attackers to exploit vulnerabilities in your device and compromise your security.
  • Discrimination: Browser fingerprinting can be used to discriminate against certain groups of users based on their device or browser configuration. This can be used to deny access to certain services or content, or to target specific groups of users with advertising or other messaging.

How to Protect Yourself from Browser Fingerprinting?

Here are some ways to protect yourself from browser fingerprinting:

Use a Virtual Private Network (VPN) Or Proxy

Using a VPN can help protect your online privacy by encrypting your traffic and hiding your IP address. This makes it more difficult for websites to identify and track you online.

Another way to protect yourself from browser fingerprinting is by using proxies. Proxies act as intermediaries between your device and the website you are visiting, masking your IP address and making it more difficult for websites to identify and track you. However, it is important to note that not all proxies are created equal, and some may actually increase your risk of being tracked. It is important to do your research and choose a reputable proxy provider that prioritizes user privacy and security.

Use Anti-Fingerprinting Tools

There are several anti-fingerprinting tools available that can help protect your online privacy. These tools work by altering your browser’s configuration to make it more difficult for websites to create a unique fingerprint.


In conclusion, browser fingerprinting is a technique used by websites to identify and track users based on the unique characteristics of their web browser. While it has legitimate uses, it poses significant risks to online privacy and security. By understanding how browser fingerprinting works and taking steps to protect your online privacy, you can minimize the risk of being tracked and monitored online.

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