---
title: JSON to YAML Converter — Live Bidirectional Online Tool
url: https://varstatt.com/toolkit/json-yaml
description: Convert between JSON and YAML instantly. Live bidirectional editing with syntax highlighting, validation, and copy support.
section: Developer Toolkit (https://varstatt.com/toolkit)
tags: data
related: JSON (https://varstatt.com/toolkit/json), JSON ↔ YAML (https://varstatt.com/toolkit/json-yaml), YAML (https://varstatt.com/toolkit/yaml)
---
# JSON ↔ YAML Converter

Convert between JSON and YAML instantly. Live bidirectional editing with syntax highlighting, validation, and copy support.

## How It Works

1. **Type in either panel** — Enter JSON on the left or YAML on the right. The other panel updates live with a 300ms debounce.
2. **Fix errors** — Invalid input shows an error with the line number. Fix it and the conversion resumes.
3. **Format and copy** — Use the format button to prettify, minify JSON, or swap panels. Copy from either side.

## FAQ

### Why use YAML over JSON?

YAML is more human-readable, supports comments, and is the standard for config files (Docker Compose, Kubernetes, GitHub Actions).

### Are comments preserved?

YAML comments are lost when converting to JSON (JSON doesn't support comments). Converting back won't restore them. To see exactly what changed between two config versions, try the [online diff tool](https://varstatt.com/toolkit/diff).

### Does it handle anchors and aliases?

The js-yaml library supports basic YAML features including anchors (&) and aliases (*) for DRY configuration.

## Usage

This tool runs entirely in the browser — visit the URL above to use it.

Prefill inputs via URL parameters:

- `https://varstatt.com/toolkit/json-yaml?input=...`

## Related Tools

- [JSON](https://varstatt.com/toolkit/json)
- [JSON ↔ YAML](https://varstatt.com/toolkit/json-yaml)
- [YAML](https://varstatt.com/toolkit/yaml)