System

Platform Detection

OS platform string

Live Playground

Analyzing your browser...0%

API Docs

Endpoint

GET /api/fingerprint/platform

Examples

About

Platform fingerprinting reads navigator.platform to detect the operating system and architecture. Common values include 'Win32' (Windows), 'MacIntel' (macOS x86_64), 'Linux x86_64', 'iPhone', 'iPad', 'Android'. Despite being deprecated in favor of User-Agent Client Hints, navigator.platform remains widely available and is difficult to spoof consistently. Mismatches between platform and other OS indicators (like screen resolution, fonts, or WebGL vendor strings) reveal spoofing attempts. Some browsers return generic values ('Linux x86_64' for privacy), but this consistency itself becomes a fingerprinting signal. The value is extremely stable and only changes with OS reinstallation or hardware changes.

Use Cases

•OS detection
•Architecture identification
•Spoofing detection
•Cross-platform compatibility

Other Fingerprints

Compare related fingerprint signals

Move from this collector to the CreepJS signal index, live checker, API docs, and other high-value fingerprinting explainers.

Core pages

Browser Fingerprinting PlatformRun a privacy-first browser fingerprint check and learn what websites can infer about your device.Fingerprint CheckerTest your browser privacy with a live fingerprint scan, collector coverage, and privacy leakage analysis.IP Risk CheckerCheck IP risk, ASN, geolocation, proxy, VPN, Tor, datacenter, and routing signals through the CreepJS API.Browser Fingerprint SignalsBrowse the full CreepJS library of browser fingerprinting signals, including canvas, WebGL, WebRTC, fonts, storage, and privacy checks.DocumentationRead the CreepJS API, SDK, collector, and integration documentation for privacy-first browser fingerprinting.API PlaygroundGenerate a token, inspect sample payloads, and test CreepJS browser fingerprinting API calls.What Is Browser Fingerprinting?Learn how browser fingerprinting works, which signals are collected, and how privacy tools reduce tracking.

Popular fingerprint signals

Canvas FingerprintCanvas rendering fingerprint based on how the browser draws graphics. Test your browser's unique canvas signature.WebGL FingerprintWebGL GPU information and rendering capabilities. Detect your graphics card and WebGL implementation.WebRTC FingerprintWebRTC capabilities and IP leakage checks. Detect peer connection support and potential network exposure signals.Anti-Fingerprinting DetectionDetection of privacy tools and browser modifications. Identify fingerprint resistance.Navigator InformationBrowser navigator properties and user agent information. Analyze browser capabilities and settings.Font DetectionInstalled system fonts detection. Discover which fonts are available on your system.