Accessibility

Reduced Transparency

Transparency preference

Live Playground

Analyzing your browser...0%

API Docs

Endpoint

GET /api/fingerprint/reduced-transparency

Examples

About

Reduced transparency fingerprinting detects prefers-reduced-transparency media query, indicating user preference for reduced transparency effects in UI elements. This accessibility feature is available on macOS and iOS, where users can enable "Reduce Transparency" in accessibility settings to improve readability and reduce visual distraction. This setting has very low adoption (<1% of users), making it highly distinctive. It reveals Apple device usage, accessibility needs, and user preferences. Should be used for UI adaptation, not tracking. The value is stable per user.

Use Cases

•Accessibility
•UI adaptation
•Readability enhancement
•Apple device detection

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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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