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ClientJS project preview
MarketingAlternative to FingerprintJS ProAlternative to MaxMindAlternative to IPinfo

ClientJS

Device information and digital fingerprinting written in pure JavaScript for visitor analytics.

View on GitHub Visit website
LicenseApache-2.0
GitHub stars3.8k
Last commit6 days ago
Tags5 topics
Device Hash GeneratorFraud Click PreventionClientjs LibVisitor Fingerprinting JsMarketing
Overview

Why consider ClientJS?

ClientJS is an open-source digital client fingerprinting library written by Jack Spirou. ClientJS generates visitor device hashes by inspecting screen DPI resolutions, installed fonts, canvas rendering hashes, timezones, and WebGL parameters to prevent fraudulent click attribution.

Guided learning

Learn ClientJS by building

Practical setup notes, real use cases, and copy-ready examples in one focused guide.

1 min read 2 sections
In this guide2 sections

Overview of ClientJS

ClientJS computes browser device fingerprints to detect unique visitors and prevent ad click fraud.

Quickstart

bash
1npm install clientjs
javascript
1import { ClientJS } from 'clientjs';
2const client = new ClientJS();
3const fingerprint = client.getFingerprint();
4console.log('Visitor ID:', fingerprint);

ClientJS is licensed under the Apache License Version 2.0.

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ClientJS FAQs

ClientJS is listed as a Marketing tool on TiloBox. Review the overview, features, and official documentation on this page to decide whether it solves your specific workflow.

Start with the project's GitHub repository and official website for supported installation and deployment instructions. Test the setup with representative data or a small project before rolling it out more widely.

ClientJS is listed under the Apache-2.0 license. Read the complete license text and the project's notices before using, modifying, or distributing the software.

Production readiness depends on your requirements. Review maintenance activity, security practices, documentation, backup and upgrade procedures, and compatibility with your stack; then validate it in a non-production environment.

ClientJS is listed as an alternative to FingerprintJS Pro. Compare the core workflow, deployment model, integrations, and licensing against your must-have requirements before switching.