YOUR DIGITAL FOOTPRINT

Every website you visit can see the data below. No permissions needed. No popups. Your browser hands it over automatically.

Nothing on this page is stored, tracked, or sent anywhere. Everything runs locally in your browser.
This page was built with Claude Code to promote data literacy.

Browser & Operating System

Always Shared

Your browser identifies itself to every server it talks to. This is how websites decide what code to send you.

BrowserScanning...
EngineScanning...
PlatformScanning...
LanguageScanning...
LanguagesScanning...
Cookies EnabledScanning...
Do Not TrackScanning...
Java EnabledScanning...
PDF ViewerScanning...
User AgentScanning...

Screen & Display

Always Shared

Screen dimensions and color capabilities help sites render correctly — but also help identify your specific device.

Screen ResolutionScanning...
Available SizeScanning...
Viewport SizeScanning...
Color DepthScanning...
Pixel RatioScanning...
OrientationScanning...
Touch SupportScanning...
Pointer TypeScanning...

Hardware

Fingerprinting Risk

JavaScript can detect your CPU cores, memory, and GPU without asking. Combined, these create a hardware "fingerprint."

CPU CoresScanning...
Device MemoryScanning...
GPU VendorScanning...
GPU RendererScanning...
Max Texture SizeScanning...
WebGL VersionScanning...

Network & Connection

Fingerprinting Risk

Your connection type and online status are freely accessible. Your IP address is visible to every server.

OnlineScanning...
Connection TypeScanning...
Downlink SpeedScanning...
Round-Trip TimeScanning...
Data SaverScanning...

Approximate Location (via IP)

High Exposure

Your IP address reveals your approximate location without any permission prompt. This is a free API lookup — no GPS involved.

IP AddressLooking up...
CityLooking up...
RegionLooking up...
CountryLooking up...
ISPLooking up...
TimezoneScanning...
UTC OffsetScanning...
Local TimeScanning...

Canvas & Audio Fingerprinting

High Exposure

Websites can draw invisible images and generate silent audio, then hash the output. Tiny rendering differences between devices create a unique "fingerprint" — even without cookies.

Canvas HashComputing...
Canvas Preview
Audio HashComputing...
WebGL HashComputing...

Storage & Capabilities

Always Shared

Sites can check what features your browser supports and what storage mechanisms are available.

LocalStorageScanning...
SessionStorageScanning...
IndexedDBScanning...
Service WorkersScanning...
Web WorkersScanning...
WebAssemblyScanning...
WebRTCScanning...
Clipboard APIScanning...

Session & Referral

Always Shared

Websites know where you came from, what page you're on, and basic timing info.

ReferrerScanning...
Current URLScanning...
Page Load TimeScanning...
History LengthScanning...

Your Fingerprint Uniqueness

Calculating...

We combined your screen, hardware, canvas, and browser data into a single hash. This hash is likely unique to your device — even without cookies or logins.

These widgets pull live data from free, public APIs — no API keys, no accounts. This is what the open web looks like.

Local Weather

Open Meteo

Your timezone + IP location = weather forecast. No GPS needed.

Loading weather...

HTTP Status Cat

http.cat

Every HTTP status code has a cat. Here's one for your page load.

HTTP 200 OK cat

200 — OK

ISS Location

open-notify.org

The International Space Station's current position, updated live.

Locating ISS...

Random Fact

uselessfacts.jsph.pl

A random fact from a free API. Because why not.

Loading fact...

Wikipedia: Random

wikimedia.org

A random Wikipedia article summary, pulled from the free Wikimedia API.

Loading article...

Your Country

restcountries.com

Detailed info about your country, pulled from a free API using your IP location.

Loading country data...

Random Book

openlibrary.org

A random book on problem-solving from the Open Library's free catalog.

Finding a book...

Bitcoin Price

coingecko.com

Live Bitcoin price from CoinGecko's free public API. No key required. Because it's 2026.

Loading price...

01

Use a Privacy-Focused Browser

Firefox, Brave, and Tor Browser actively resist fingerprinting by normalizing data points.

02

Install Privacy Extensions

uBlock Origin, Privacy Badger, and Canvas Blocker reduce what sites can collect.

03

Use a VPN

Masks your IP address and approximate location. Doesn't fix fingerprinting, but limits one major vector.

04

Stay Informed

Understanding what's exposed is the first step. Tools like EFF's Cover Your Tracks can help.

Cybersecurity for Normal People video thumbnail Free Video Series

Cybersecurity for Normal People

Clear, jargon-free walkthrough of how your data moves through the internet and what you can do about it.

Watch on YouTube
Free Tool

EFF: Cover Your Tracks

Test how well your browser protects you against tracking. Built by the Electronic Frontier Foundation.

Test Your Browser
FogSift logo
FogSift Service

Got a Security Question?

Submit your privacy or security question to the FogSift queue. $20 gets you a written report and video response.

Join the Queue

Transparency Notice

  • This page is 100% client-side. Nothing is sent to our servers.
  • IP geolocation uses the free ip-api.com service (their privacy policy applies to that one request).
  • No cookies are set by this page. No analytics. No tracking pixels.
  • This page was built by FogSift using Claude Code to promote data literacy.
  • Source code is open. View on GitHub.