Prettier

Prettier is an opinionated code formatter that supports JavaScript, TypeScript, CSS, JSON, Markdown, YAML, and more via plugins. Current stable version is 3.4.2, released monthly. It parses code and reprints it with its own rules, enforcing consistent style and handling line wrapping. Key differentiators: zero configuration, automatic formatting on save, editor integrations, and a vast plugin ecosystem. It is widely adopted in the JavaScript ecosystem.