# FingerprintJS

FingerprintJS is a Bot Management & CAPTCHA product. It runs in the cloud. Pricing is free.

FingerprintJS is a client-side browser fingerprinting library that provides a unique visitor identifier unaffected by incognito mode.

Checked October 2026.

## What is FingerprintJS?

FingerprintJS is a source-available, client-side, browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them. Unlike cookies and local storage, a fingerprint stays the same in incognito/private mode and even when browser data is purged. License: Starting version 4.0.0, FingerprintJS is licensed under Business Source License 1.1. The BSL allows use only for non-production purposes. Use Case: Is a commercial license required? Exploring FingerprintJS for your own research, hobbies, and testing purposes - No. Using FingerprintJS to build a proof-of-concept application - No. Using FingerprintJS to build revenue-generating applications - Yes. Using FingerprintJS to build software that is provided as a service (SaaS) - Yes. Forking FingerprintJS for any production purposes - Yes. To purchase a license for uses not authorized by BSL, please contact sales@fingerprint.com. Demo: Visit https://fingerprintjs.github.io/fingerprintjs to know your visitor identifier. Now, try visiting the same page in private/incognito mode and notice how the visitor identifier remains the same! Getting Started: <script>

Tags: Open Source, Browser Security, Fraud Detection

## Quick facts

- Category: [Application Security](https://cybersectools.com/categories/application-security) · [Bot Management & CAPTCHA](https://cybersectools.com/categories/bot-management-captcha)
- Deployment: Cloud
- Company size fit: Startup, SMB, Mid-Market, Enterprise
- Pricing model: Free
- GitHub stars: 26,751
- Website: github.com

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best Application Security Solutions for Business](https://cybersectools.com/shortlists/best-application-security-solutions).

## FingerprintJS FAQ

### What is FingerprintJS?

FingerprintJS is a product in the Bot Management & CAPTCHA category. It covers Open Source, Browser Security and Fraud Detection.

### What is the pricing for FingerprintJS?

FingerprintJS is free. Download and setup instructions are at https://github.com/fingerprintjs/fingerprintjs/.

### What are alternatives to FingerprintJS?

Alternatives to FingerprintJS listed on CybersecTools:

1. [Akamai Bot & Abuse Protection](https://cybersectools.com/tools/akamai-bot-and-abuse-protection) - Bot detection & mitigation platform protecting against abuse & scraping (Commercial)
2. [reCAPTCHA](https://cybersectools.com/tools/recaptcha) - Bot detection service that verifies human users through challenges (Commercial)
3. [CHEQ Form Guard](https://cybersectools.com/tools/cheq-form-guard) - Protects web forms from bots and fake users to prevent junk leads (Commercial)
4. [Humera](https://cybersectools.com/tools/humera) - Invisible bot detection and human verification for web apps and APIs (Commercial)
5. [DataDome Ad Protect](https://cybersectools.com/tools/datadome-ad-protect) - ML-based click fraud & bot detection tool to protect ad spend. (Commercial)

Compare all FingerprintJS alternatives at [https://cybersectools.com/alternatives/fingerprintjs](https://cybersectools.com/alternatives/fingerprintjs)

### What deployment and organization size does FingerprintJS fit?

FingerprintJS is available as a cloud service. It is listed for startups, small businesses, mid-market companies and enterprises. It is free.

## Compare FingerprintJS with similar solutions

- [FingerprintJS vs Akamai Bot & Abuse Protection](https://cybersectools.com/compare/akamai-bot-and-abuse-protection-vs-fingerprintjs)
- [FingerprintJS vs reCAPTCHA](https://cybersectools.com/compare/fingerprintjs-vs-recaptcha)
- [FingerprintJS vs CHEQ Form Guard](https://cybersectools.com/compare/cheq-form-guard-vs-fingerprintjs)

All alternatives to FingerprintJS: [/alternatives/fingerprintjs](https://cybersectools.com/alternatives/fingerprintjs)

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Source: https://cybersectools.com/tools/fingerprintjs

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More on FingerprintJS: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=product-md