# biomejs/biome

A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP.

Repository: https://github.com/biomejs/biome
Canonical: https://ross.abutalabs.com/products/biome
Homepage: https://biomejs.dev
Language: Rust
License: Apache-2.0
License Family: permissive
Topics: css, formatter, javascript, jsx, linter, static-code-analysis, typescript, web, json
Last push: 2026-08-26T22:53:49+00:00

## Health v2 (maintenance only)
Score: 91/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 86, longevity 80
- inputs: {"age_days": 1133, "days_push": 7, "days_rel": 12, "gap_med": 5.5, "n_releases_24m": 75}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 25653, forks 1208 (observed 2026-08-28T04:11:38.385667+00:00)

## What it is
Biome is a fast web toolchain written in Rust that provides a code formatter (97% Prettier-compatible) and a linter with 500+ rules for JavaScript, TypeScript, JSX, JSON, CSS, HTML, and GraphQL. It is usable via CLI and LSP, works as a dev dependency or standalone executable, and requires no Node.js runtime.

## Use cases
- format javascript and typescript code like prettier
- lint typescript and jsx files with auto-fixes
- replace eslint and prettier with one fast tool
- organize imports and check code in CI
- format css and json files
- integrate linting and formatting into editors via LSP

## When to choose
- you want a single fast tool replacing both ESLint and Prettier
- you need very fast formatting and linting for large web codebases
- you want formatting without a Node.js runtime dependency

## When to avoid
- you rely on ESLint plugins or custom rules not supported by Biome
- you need 100% Prettier output compatibility
- you lint non-web languages outside Biome's supported set

## Facets
- artifact type: cli-tool
- maturity: active
- function: linter, formatter, static-site-generator, developer-tools, cli
- domain: developer-tools, web-development, frontend
- platform: cli, cross-platform
- tags: prettier-alternative, eslint-alternative, rust, lsp, code-quality, toolchain, css, json, jsx, javascript, typescript, nodejs, web-server

## Member repositories
- biomejs/biome (main) score 91

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:38.385667+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 2026-08-29T16:56:00.824907+00:00, confidence not recorded.
  - readme: https://github.com/biomejs/biome (fetched 2026-08-28T04:11:38.385667+00:00, sha 5649765a3dbf)
  - homepage: https://biomejs.dev (fetched 2026-08-29T07:52:42.259022+00:00, sha d89b71799c85)
  - site_page: https://biomejs.dev/guides/getting-started (fetched 2026-08-29T07:52:42.268682+00:00, sha e7c979dea93e)
- Data as of 2026-08-30T08:39:29.467469+00:00.