# intoli/user-agents

A JavaScript library for generating random user agents with data that's updated daily.

Repository: https://github.com/intoli/user-agents
Canonical: https://ross.abutalabs.com/products/user-agents
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: user-agent, user-agent-spoofer, random, randomization, javascript, navigator, browsers, browser-automation, web-scraping
Last push: 2026-09-02T06:35:59+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 35, longevity 100
- inputs: {"age_days": 2949, "days_push": 0, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1188, forks 61 (observed 2026-09-03T02:15:12.952588+00:00)

## What it is
A JavaScript/TypeScript npm package for generating random user agents weighted by real-world market share, with daily-updated data. It also exposes hard-to-find browser fingerprint properties and filtering capabilities for targeting specific browsers or devices.

## Use cases
- generate random realistic user agents for web scraping
- rotate user agent headers in browser automation with puppeteer or playwright
- get browser fingerprint properties like navigator and platform for a user agent
- filter user agents by browser, device, or operating system
- avoid bot detection by mimicking real traffic patterns

## When to choose
- you need realistic, market-share-weighted user agents for scraping or automation
- you want daily-updated user agent data without maintaining it yourself
- you need matching fingerprint properties (navigator, platform, viewport) alongside the user agent string

## When to avoid
- you need user agent parsing rather than generation
- you work outside JavaScript/Node.js
- you need a full anti-bot evasion framework rather than just user agent data

## Facets
- artifact type: library
- maturity: active
- function: data-generation, web-scraping, developer-tools
- domain: web-development, crawlers, developer-tools
- platform: cross-platform
- tags: user-agent, browser-fingerprint, randomization, web-scraping, anti-detection, nodejs, javascript

## Member repositories
- intoli/user-agents (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:12.952588+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:23:36.785094+00:00, confidence not recorded.
  - readme: https://github.com/intoli/user-agents (fetched 2026-09-03T02:15:12.952588+00:00, sha 68b2d0c2d4d8)
- Data as of 2026-08-30T08:39:29.467469+00:00.