What is Biome?

Biome is a toolchain for web projects that handles linting, formatting, and more — written in Rust. It’s designed to replace ESLint, Prettier, and various other tools with a single, blazing-fast binary. Created by the team behind Rome.

Key Features

20-30x Faster Than ESLint + Prettier

Biome processes thousands of files in milliseconds. Where ESLint + Prettier might take 10-30 seconds on a large codebase, Biome finishes in under a second. This matters in CI/CD and editor feedback loops.

Single Tool, Multiple Jobs

Instead of configuring ESLint for linting and Prettier for formatting (and dealing with conflicts between them), Biome does both with consistent configuration. One tool, one config file, no conflicts.

Zero-Config Sensible Defaults

biome init creates a config that works for most projects immediately. TypeScript, JSX, import sorting — all enabled by default with reasonable rules.

First-Class TypeScript

No need for @typescript-eslint or separate parser configuration. Biome understands TypeScript natively — type annotations, generics, decorators, all of it.

Pricing

Biome is completely free and open-source (MIT license). No paid tiers, no commercial licensing needed.

Who Should Use Biome?

• Teams frustrated with slow ESLint + Prettier setups
• New projects that want a modern, fast toolchain from day one
• Large codebases where linting speed impacts CI/CD time
• Developers who want one tool instead of three

The Bottom Line

Biome is the future of JavaScript/TypeScript tooling. It’s faster, simpler, and more reliable than the ESLint + Prettier combo. The rule set is growing rapidly, and for most projects, it already covers everything you need. If you’re starting a new project, use Biome.