CreepJS

CreepJS

Educational, privacy-first browser fingerprinting platform for developers.

Product

  • Checker
  • Documentation
  • IP Risk Checker
  • API Playground

Resources

  • CreepJS 2.0
  • API Reference
  • Browser Fingerprinting Guide
  • Fingerprint Signal Index
  • Privacy Policy

Popular Signals

  • Canvas Fingerprint
  • WebGL Fingerprint
  • WebRTC Fingerprint
  • Anti-Fingerprinting Detection

Connect

© 2026 CreepJS. All rights reserved.

Free IP intelligence — no signup

IP Risk Checker

Look up geolocation, ASN, routing, proxy, VPN, Tor, datacenter, and risk signals for any IP address — free, no token required. Just enter an IP and check.

Run a lookup

Free — no token needed. Limited to 30 lookups/day per visitor.

Awaiting lookup

Ready to check

Enter an IP address to retrieve risk, routing, and network ownership signals.

Geo

CountryUnknown
CityUnknown
RegionUnknown
TimezoneUnknown
CoordinatesUnknown

Network

ASNUnknown
OrganizationUnknown
CategoryUnknown
Service roleUnknown
PrefixUnknown
RPKIUnknown

Risk

Risk scoreUnknown
IP scoreUnknown
BandUnknown
VerdictUnknown
Threat levelUnknown
ProxyUnknown
VPNUnknown
TorUnknown
DatacenterUnknown

Evidence Signals

Empty evidence usually means the IP has no notable negative indicators.

No evidence signals returned yet.

Lookup Metadata

Cache hitUnknown
TierUnknown
Daily limitUnknown
Remaining todayUnknown
ResetsUnknown
Free public lookups are rate-limited per visitor. Developers needing higher limits can call GET /v1/ip/:ip with a CreepJS API token. The paid upstream key stays on the Worker.

Related privacy and fingerprinting tools

Connect IP reputation analysis with browser fingerprint checks, signal explainers, and API integration references.

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.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.