Biome

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Introduction

Biome is a toolchain for web projects that aims to provide formatting and linting in one fast tool. It is written in Rust and grew out of the Rome project.

The formatter is designed to be largely compatible with Prettier, and the linter ships hundreds of rules, many inspired by ESLint and its popular plugins. Supported languages include JavaScript, TypeScript, JSX, JSON, CSS and GraphQL. biome check runs formatting, linting and import sorting together, with safe and unsafe fixes. Version 2 added type-aware rules without the TypeScript compiler and a plugin system using GritQL.

In the quality loop Biome can replace ESLint plus Prettier for teams that value speed and simplicity.

The source code is at biomejs/biome on GitHub under the Apache-2.0 licence, with about 26,100 stars; the most recent commit was on 11 November 2026.

Features

1. Formatter: Prettier-compatible output.
2. Linter: Hundreds of rules.
3. One command: biome check for format, lint and imports.
4. Fast: Rust implementation.
5. Multi-language: JS, TS, JSX, JSON, CSS, GraphQL.
6. Migration commands: Import ESLint and Prettier configs.

Pros

1. Speed and simplicity: One config, one binary.
2. Free to use: Open source under the Apache-2.0 licence, so the core tool costs nothing to use.
3. Actively maintained: The repository had commits as recent as 11 November 2026.
4. Community: About 26,100 GitHub stars.

Cons

1. Smaller ecosystem: Fewer plugins than ESLint.
2. Rule parity: Not every ESLint plugin rule exists.
3. Framework coverage: Some template languages are partial.

Usage and Links (Example)

npm i -D -E @biomejs/biome
npx biome init
npx biome migrate eslint --write
npx biome ci .

Resources:

• Biome website
• GitHub repository

Pricing

Biome is free and open source under the Apache-2.0 licence.

Recommended for?

1. JavaScript and TypeScript teams wanting fast lint and format.
2. Projects tired of maintaining ESLint and Prettier configs.

Conclusion

Biome is a fast, unified formatter and linter for web code.

Check rule coverage against your current ESLint plugins before switching.

On CheckOps, Biome is filed under the Release & CI gates stage. Related tools listed here include ESLint, SonarQube, Semgrep, MegaLinter, pre-commit and webhint. When comparing them, weigh the licence, the languages and platforms each supports, whether it is self-hosted or managed, and how cleanly it slots into your existing CI pipeline. Details on this page were checked against the official website, documentation and repository on 11 November 2026.