npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@guardhivefraudshield/device-fingerprint

v0.0.3

Published

device-fingerprint client side device fingerprint module

Downloads

114

Readme

Device Fingerprint

GitHub package.json dynamic NPM Version NPM Downloads

ThumbmarkJS is the world's second best browser fingerprinting JavaScript library. While not (yet?) as good, it's a free open source alternative to the market leading FingerprintJS. It is easy to use and easily extendable.

ThumbmarkJS is open source (MIT).

🙏 Please don't do evil. ThumbmarkJS is meant to be used for good. Use this to prevent scammers and spammers for example. If you see this library being used for evil, contact me.

Demo page

You can help this project by visiting the demo page that logs your fingerprint for analysis. The logged fingerprint data is only used to improve this library. Visit the page from the link: Show and log my fingerprint

The library works very well to distinguish common browsers.

Simple usage from CDN

Transpiled bundles are available now on JSDelivr.

Supported module formats:

  • UMD: https://cdn.jsdelivr.net/npm/@guardhivefraudshielddevice-fingerprint/dist/index.umd.js
  • CommonJS: https://cdn.jsdelivr.net/npm/@guardhivefraudshield/device-fingerprint/dist/index.cjs.js
  • ESM: https://cdn.jsdelivr.net/npm/@guardhivefraudshield/device-fingerprint/dist/index.esm.js

And on the web page:

<script src="https://cdn.jsdelivr.net/npm/device-fingerprint/dist/index.umd.js"></script>
<script>
ThumbmarkJS.getFingerprint().then(
    function(fp) {
        console.log(fp);
    }
);
</script>

<!-- or -->

<script>
import('https://cdn.jsdelivr.net/npm/device-fingerprint/dist/index.umd.js')
.then(() => {
    ThumbmarkJS.getFingerprint().then((fp) => { console.log(fp)})
})
</script>

You can also call ThumbmarkJS.getFingerprintData() to get a full JSON object with all its components.

Options

You can use the setOption method to change the behavior of the library. Currently it takes only one option.

| option | type | example | what it does | | ------- | -------- | ----------------------------------- | --------------------------------------------------------------------------------------------------- | | exclude | string[] | ['webgl', 'system.browser.version'] | removes components from the fingerprint hash. An excluded top-level component improves performance. |

example usage:

ThumbmarkJS.setOption('exclude', ['webgl', 'system.browser.version'])

Install with NPM

Installing from NPM:

npm install device-fingerprint

and in your code

import { getFingerprint } from "device-fingerprint";

To implement ThumbmarkJS in a Next.js app, you can use a component like this.

:warning: note, thumbmarkjs was published up to version 0.12.1 to NPM package thumbmarkjs and from v0.12.1 onwards will be published under device-fingerprint. I'll occasionally update the old location, but please update your imports.

But bear in mind that the library is meant to be running in the browser. Let me know if the library fails on a server side import. However, getFingerprint() is not meant to be called server side.

Build it yourself

Clone this repo and then run

yarn install
yarn build

How you can help

Simply going to the Show and log my fingerprint-page helps a lot. The logging is all anonymous and only used to develop this library. Let me know if you run into any errors by opening an issue. The discussion section is also open.

Test cases you can try:

  • Check your fingerprint, then refresh the page with Ctrl + R
  • Refresh without cache
  • Move the window to another screen
  • Try in incognito

if you see a fingerprint change when it shouldn't, you can use this JSON Diff Finder tool to check what causes the diff.

Components included in fingerprint

  • audio fingerprint
  • canvas fingerprint
  • webgl fingerprint
  • available fonts and how they render
  • videocard
  • browser languages and time zone
  • browser permissions
  • available plugins
  • a ton of screen details including media queries
  • and a bunch of smaller things