Zero dependency browser identifier toolkit

Device UUID generation with explicit fingerprint controls.

This demo runs entirely in your browser. The basic UUID is generated on load; advanced fingerprinting methods run only when you press the run button.

Synchronous API

Basic UUID

Not generated

Parsed browser info

Sync components

Parser

User-agent inspection

User-agent string

Explicit opt-in

Advanced fingerprint run

Advanced methods can inspect browser characteristics such as canvas, WebGL, audio, fonts, media device counts, network hints, timezone, and private-mode indicators. Nothing is sent off this page.

Mode Preset Custom

Preset

Advanced fingerprinting has not run.

UUID-

Confidence-

Duration-

Timestamp-

Enabled methods-

Succeeded / blocked-

Advanced fingerprint components
Component	Status	Value	Duration
Run advanced fingerprinting to populate components.

Crawlable reference

Install and API snippets

Install

npm install device-uuid

Browser script

<script src="assets/index.browser.min.js"></script>
<script>
  const device = new DeviceUUID();
  const uuid = device.get();
</script>

Module usage

import { DeviceUUID } from 'device-uuid';

const device = new DeviceUUID();
const uuid = device.get('optional-custom-data');
const details = await device.getDetailedAsync('standard');

Feature support

if (DeviceUUID.isFeatureSupported('webgl')) {
  const details = await device.getDetailedAsync({
    webgl: true,
    timeout: 3000
  });
}

Privacy and limitations

What this page does

Basic UUID generation runs on page load and uses synchronous browser/device properties.
Canvas, WebGL, audio, font, media device, network, timezone, and private-mode checks run only after explicit opt-in.
The demo JavaScript performs no network requests, uses no analytics, and stores nothing.
Strict privacy modes, Tor Browser, Brave Shields, Safari ITP, and Firefox fingerprinting resistance can block or reduce advanced component values.