Browser

Local Storage

LocalStorage availability

Live Playground

Analyzing your browser...0%

API Docs

Endpoint

GET /api/fingerprint/local-storage

Examples

About

LocalStorage fingerprinting checks window.localStorage availability and capabilities. While nearly universal in modern browsers, LocalStorage may be disabled in private/incognito mode, blocked by privacy extensions, or restricted by corporate policies. The technique tests not just availability but also quota limits, which vary by browser and mode. Safari in private mode disables LocalStorage, Chrome allows it with restrictions. Testing storage persistence across sessions reveals private browsing mode. LocalStorage absence in modern browsers is a strong privacy signal.

Use Cases

•Storage capability
•Private mode detection
•Browser storage policy
•Data persistence

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.

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