Prettier

Code Formatter P Integrations & Community

Basic Information

Product Description

Prettier is an opinionated code formatting tool that enforces a consistent coding style by parsing code and reprinting it with its own rules. Prettier takes into account the maximum line width and wraps code when necessary. Prettier supports multiple languages and formats such as JavaScript, TypeScript, CSS, HTML, JSON, Markdown, YAML, and is the most popular code formatting solution in front-end development.

Core Features/Characteristics

  • Automatic Formatting: Format the entire codebase with one click
  • Opinionated: Minimal configuration options to reduce team debates
  • Multi-language Support: JavaScript, TypeScript, CSS, HTML, JSON, Markdown, YAML, etc.
  • Editor Integration: Plugins for mainstream editors like VS Code, WebStorm, Vim, etc.
  • Git Hook Integration: Automatically format on commit with husky and lint-staged
  • Parse-Print Model: Parse AST and regenerate code to ensure consistency
  • Optional Configuration: Few configuration options (line width, Tab/Space, semicolons, quotes, etc.)

Competitive Landscape

  • Oxfmt: A Rust-driven Prettier-compatible formatter that appeared in 2026, over 30 times faster than Prettier
  • Biome: Also provides built-in code formatting functionality

Business Model

  • Completely Free and Open Source: MIT License
  • Sponsorship Support: Community sponsorship through Open Collective

Market Performance

  • The most popular code formatting tool in front-end development
  • Tens of millions of weekly downloads on npm
  • Almost a standard in modern JavaScript/TypeScript projects
  • Adopted by numerous open-source projects and enterprises

Relationship with OpenClaw Ecosystem

Prettier is the code formatting tool for OpenClaw. OpenClaw uses Prettier to ensure consistent code style across all TypeScript, CSS, and configuration files, reducing discussions about formatting during code reviews. Prettier works alongside ESLint to maintain code quality and consistency in the OpenClaw codebase, automatically formatting code before each commit via Git Hook.