Someone is watching you. Always.

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Every website you visit collects information about you – often without you even noticing. Large companies link this data to create detailed profiles. This allows them to predict your behaviour, influence you in a targeted manner or sell your data to advertisers.

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Your IP & location

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Note: This location display is based on your IP address and is usually only accurate to within a few kilometres. With GPS-enabled devices (e.g. smartphone) and location sharing, it may be accurate to within a few metres.

Map shows approximate location based on IP data.

What does your IP reveal?

Your IP address is like your digital house number – it shows websites which country, state or even city you are currently online from. It also reveals your internet service provider and often your approximate time zone.

Combined with other data such as your browser or the website you visited, your IP address can be used to recognise you across multiple visits. Authorities or internet providers can even use it to track which pages you visited and when.

Example: Even if you don't log in, an advertising platform can use your IP address to determine that the same user is surfing from home in the morning and from a café at lunchtime – and create a movement profile based on this information.

How to protect yourself:

  • Use a VPN or the Tor network
  • Only use public Wi-Fi networks with additional protection
  • Do not grant unnecessary location permissions

What is a browser fingerprint?

Your browser reveals more about you than you think: screen size, installed fonts, plugins, time zone, language settings and much more. Taken together, this creates a unique profile – your „Fingerprint“. Even if you use a VPN, your fingerprint may still make you recognisable under certain circumstances.

Even if you do not accept cookies and do not log in, this fingerprint can still recognise you. Large advertising networks compare it across pages to create movement profiles without you noticing. This allows them to tailor their advertising to your interests.

Example: Your screen has an unusual size, you use a rare operating system and a special language setting. The probability that someone else has exactly the same combination is extremely low – and that is precisely what makes you identifiable.

How to protect yourself:

  • Use privacy-friendly browsers such as Firefox or Brave.
  • Enable ‘Resist Fingerprinting’ in your browser settings.
  • Use privacy add-ons such as uBlock Origin or Privacy Badger.

Your browser fingerprint

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Email Tracking Check

Upload or paste the HTML source code of your email to find hidden tracking pixels and external resources.

How does email tracking work?

Many newsletters and advertising emails contain invisible images (1×1 pixel) or special links that are automatically loaded when the email is opened. This often transmits your IP address, location, device type and even the exact time of opening to the sender.

This data can be used to track how often and when you read emails – and when combined with other information, it creates a detailed user profile.

Example: You open a newsletter at home in the morning and later at the office. The sender can use your IP addresses to recognise that it is the same recipient – and deduce your habits.

How to protect yourself:

  • Disable automatic loading of external images in your email programme
  • Use email services with built-in tracking protection (e.g. ProtonMail, Tutanota)
  • Only open suspicious emails in text view

Note: Tracker detection is based on the publicly available
DuckDuckGo Tracker Radar database.

About PrismPrivacy

Hi, my name is Philip I am a web developer and tech enthusiast. I created PrismPrivacy as a personal project to better understand how privacy works and how data is actually collected online. While building it, I realised this could also be a great way to share this knowledge and raise awareness about online tracking with others.

All tools on this site run entirely in your browser. No data is ever sent to a server or stored. My goal is to make invisible tracking visible, so you can better protect yourself and make informed choices.

If you are interested about other projects from me, you can check out my blog codephilip.com or my YouTube channel @codephilipYT, where I share tutorials and other coding related stuff.

Tracker detection is powered by the publicly available DuckDuckGo Tracker Radar database.

Got feedback or ideas? Feel free to reach out.

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