jackspirou/clientjs
Device information and digital fingerprinting written in pure JavaScript. observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4688
- days_rel: n/a
- days_push: 1333
- n_releases_24m: 0
Adoption not part of the score
2230 stars · 335 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
ClientJS is a pure JavaScript library for browser device fingerprinting and device information gathering. It generates a 32-bit integer fingerprint from browser/device data points while also exposing individual attributes like OS, browser, screen resolution, and plugins.
Use cases
- fingerprint browsers to identify returning visitors without cookies
- detect user's operating system, browser, and device type
- get screen resolution and color depth of client devices
- check browser plugin, font, and storage support
- generate a stable device ID for fraud detection
- collect client-side device analytics for a website
When to choose
- you need cookieless visitor identification in pure JavaScript
- you want both a fingerprint hash and the underlying data points exposed
- you need a lightweight, dependency-free browser library
When to avoid
- you need strong anti-fraud guarantees against modern anti-fingerprinting browsers
- you need server-side or mobile-native fingerprinting
- you need actively developed features - releases are infrequent
Facets
library · maturity maintenance
security analytics web-development privacy browser-extensions browser cross-platform browser-fingerprinting device-detection user-agent client-information privacy nodejs
3 sources
- readme: https://github.com/jackspirou/clientjs · fetched 2026-08-28 · e8308391731e
- homepage: http://clientjs.org · fetched 2026-08-29 · c57549b0e546
- registry_npm: https://registry.npmjs.org/clientjs · fetched 2026-08-29 · 0179b8553221
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| jackspirou/clientjs | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="jackspirou/clientjs")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem