Accessibility

Forced Colors

High contrast mode

Live Playground

Analyzing your browser...0%

API Docs

Endpoint

GET /api/fingerprint/forced-colors

Examples

About

Forced colors fingerprinting detects Windows High Contrast mode via (forced-colors: active) media query. This Windows-specific accessibility feature replaces website colors with system colors for better visibility. Used by users with visual impairments, light sensitivity, or preference for high contrast. Adoption is 1-2% (Windows accessibility users), making it distinctive. The setting strongly indicates Windows OS and accessibility needs. It reveals medical information and should be used for accessibility, not tracking. The value is stable per user and very OS-specific.

Use Cases

•Windows detection
•High contrast support
•Visual impairment
•Accessibility accommodation

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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.

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