simple-fingerprint

Simple browser fingerprinting library

Demo: https://pjanczyk.github.io/simple-fingerprint/

Installing

npm install simple-fingerprint

yarn add simple-fingerprint

Usage

Simple usage

Compute a stable browser fingerprint:

import { computeFingerprint } from "simple-fingerprint";

let fingerprint = await computeFingerprint();

computeFingerprint() returns an SHA1 hash of a fingerprint, e.g., "2fd4e1c67a2d28fced849ee1bb76e7391b93eb12".

Advanced usage

Compute components of a fingerprint:

import { computeFingerprintComponents } from "simple-fingerprint";

let components = await computeFingerprintComponents();

computeFingerprintComponents() returns an object with the following properties:

{
  devicePixelRatio: number | null
  userAgent: string | null
  platform: string | null
  plugins: string | null
  headers: string | null
  dateFormat: string | null
  fonts: string | null
  batteryCharging: boolean | null
  batteryLevel: number | null
  canvas2dRender: string | null
  webglRenderer: string | null
  webglRender: string | null
}

Note that batteryCharging and batteryLevel are not stable and may change over time.