Guides
Browser fingerprinting guides.
Start with the browser fingerprinting overview, then explore the browser and network signals that make a client recognizable.
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Browser fingerprinting overview
Learn how separate browser, device, account, and network observations become one recognizable profile.
Overview · Foundational
What Is Browser Fingerprinting?
Learning hub: how multi-layer browser profiles are built, why VPNs and cookie clearing aren't enough to stop it, and a full directory of the technical guides below.02 · Browser
Browser and rendering signals
The APIs, measurements, and rendering behavior a page can inspect from inside the browser.
8 resourcesWhat is Extension Fingerprinting?
How websites detect extensions, combine their traces into a fingerprint, infer sensitive interests, and how browser protections differ.
What Is Canvas Fingerprinting?
How hidden drawing tests turn rendering quirks into a stable browser identifier.
What Is WebGL Fingerprinting?
How graphics APIs expose GPU, driver, and rendering behavior that can help identify a browser.
What Is Font Fingerprinting?
How text measurement and glyph rendering reveal installed fonts and software footprints.
What Is Screen and Viewport Fingerprinting?
How resolution, pixel ratio, and browser chrome measurements help classify a device.
What Is Audio Fingerprinting?
How offline audio processing reveals subtle implementation differences across browsers and devices.
What Are Navigator Properties in Browser Fingerprinting?
How standard browser APIs expose platform, hardware, and language details by default.
What Is Timezone and Locale Fingerprinting?
How language order, timezone, and Intl settings expose regional configuration.
03 · Network
Request and network signals
What the browser and operating system reveal while establishing a connection and requesting a page.
4 resourcesDoes a VPN Make You Private?
How VPN privacy works, who can see your traffic, and why accounts and browser fingerprints can still connect your visits. Explore an interactive visibility map.
What Is HTTP Header Fingerprinting?
How request metadata, client hints, and header patterns reveal more than most users expect.
What Is TLS Fingerprinting?
How JA3 and JA4 use an HTTPS handshake to identify a client before the page loads.
What Is TCP/IP Fingerprinting?
How low-level packet defaults and network-stack behavior can classify the client beneath the browser.
04 · Device
Device and operating-system identifiers
Identifiers assigned below the browser by hardware, operating systems, accounts, and platform services.
2 resourcesWhat Is Hardware and Sensor Fingerprinting?
How motion, audio, and environmental sensors can identify hardware, behavior, routines, and physical context.
What Is a Global Device Identifier?
How Windows GDID, Apple Hardware UUID, and account-linked identifiers create durable identity below the browser.
05 · Browser evaluations
Evaluations and technical guides
Evidence-led browser testing, implementation analysis, and the public records behind each conclusion.
2 resourcesIs Google Chrome Private?
Is Google Chrome private? Review what websites can track, what Incognito hides, how Google accounts connect activity, and our browser fingerprinting test results.
What Is Chrome Fingerprinting? A Technical Guide
A layer-by-layer examination of Chrome fingerprinting surfaces, recognition boundaries, Incognito, network context, and all fourteen public evidence captures.