Skip to main content
Workbench

About JSON & YAML Workbench

JSON & YAML Workbench is a collection of JSON and YAML developer tools that run entirely in your browser. It exists because working with configuration and API payloads should not require pasting potentially sensitive data into a remote server.

Principles

  • Privacy first. Your documents never leave your device.
  • Honesty over magic. We never silently repair or transform your data — lossy operations are always flagged.
  • Correctness. Standards-based parsing, precise error locations, and well-tested conversion.
  • Speed. Heavy work runs in a Web Worker so the interface stays smooth.

Built with

Next.js, React, TypeScript, Tailwind CSS, CodeMirror 6, the yaml library, and AJV for JSON Schema Draft 2020-12 validation.

Ready to try it? Open the JSON formatter.