LEAN Format – Lightweight efficient adaptive notation

Summary: LEAN is a minimal, human-readable data format combining JSON's flexibility with CSV's compactness, designed to reduce verbosity and complexity in data interchange. It supports comments, table row syntax, and full TypeScript integration, with CLI tools and a VS Code extension.

What it does

LEAN provides a compact, readable format for configuration files, API payloads, and data exchange, offering 40% smaller size than JSON and supporting comments and tables.

Who it's for

It targets developers needing efficient, clear data formats for configurations and APIs.

Why it matters

LEAN addresses JSON's verbosity and YAML's complexity, streamlining data handling with a production-ready ecosystem.