# browserslist/browserslist

🦔 Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-preset-env

Repository: https://github.com/browserslist/browserslist
Canonical: https://ross.abutalabs.com/products/browserslist
Homepage: https://browsersl.ist
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2026-08-08T09:52:37+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 96, release rhythm 96, longevity 100
- inputs: {"age_days": 4281, "days_push": 25, "days_rel": 25, "gap_med": 17, "n_releases_24m": 24}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 13561, forks 774 (observed 2026-08-28T04:11:03.551466+00:00)

## What it is
Browserslist is a JavaScript library and configuration format for sharing target browser and Node.js version lists between front-end tools like Autoprefixer, Babel, ESLint, and Stylelint. It resolves queries such as 'last 2 versions' using Can I Use data so all tools agree on the same browser support targets.

## Use cases
- share target browsers between autoprefixer and babel
- define supported browsers in package.json
- avoid manually updating browser version lists
- check which browsers my css config supports
- configure babel-preset-env target browsers
- lint for unsupported browser features
- set node versions for server-side rendering builds

## When to choose
- you use multiple front-end tools that need a consistent browser support target
- you want queries based on Can I Use usage data instead of hardcoded version lists
- you build web apps or libraries with Autoprefixer, Babel, PostCSS, or Stylelint

## When to avoid
- you need runtime browser feature detection rather than build-time targets
- your project is not JavaScript/front-end tooling based
- you only target a single tool that has its own built-in browser config

## Facets
- artifact type: library
- maturity: stable
- function: configuration-management, developer-tools, build-tool
- domain: frontend, web-development, developer-tools
- platform: cross-platform
- tags: browser-compatibility, caniuse, autoprefixer, babel, postcss, target-browsers, config-sharing, nodejs, javascript

## Member repositories
- browserslist/browserslist (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:03.551466+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 2026-08-29T17:13:12.385113+00:00, confidence not recorded.
  - readme: https://github.com/browserslist/browserslist (fetched 2026-08-28T04:11:03.551466+00:00, sha f9d8bcfb91b6)
  - homepage: https://browsersl.ist (fetched 2026-08-29T08:08:14.169338+00:00, sha b61f4f2b0b83)
- Data as of 2026-08-30T08:39:29.467469+00:00.