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JSON / YAML Converter

Convert between JSON and YAML formats instantly in your browser. Dependency-free parser handles mappings, sequences, nested structures, booleans, null, and quoted strings. Your data never leaves your machine.

json yaml converter config developer-tools

Published May 27, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Paste JSON or YAML and the tool converts it to the other format in real time. Toggle between JSON to YAML and YAML to JSON modes — switching swaps the output into the input field so you can round-trip. The parser is dependency-free and handles the JSON-compatible YAML subset that covers the vast majority of real-world config files.

Features

  • Bidirectional: JSON to YAML and YAML to JSON
  • Live conversion: output updates as you type
  • Swap mode: toggle direction and the current output becomes the new input
  • Copy / Paste / Clear: one-click clipboard actions
  • Private: runs entirely in the browser — no network requests

Use Cases

  • Converting config files between JSON and YAML (Docker Compose, CI/CD, Kubernetes)
  • Quickly reformatting API responses for readability
  • Generating YAML snippets from JSON data during development