JSON ⇄ YAML Converter

This tool converts between JSON and YAML right in your browser using the js-yaml library. Nothing leaves your device — conversions, formatting and validation run locally.

Tool

Fast, in-browser conversion between JSON and YAML. Use Format / Validate / Minify / Copy / Download.

Conversion JSON → YAML YAML → JSON

Auto-validate on update

Change output background to green/red

 

Input

Sample included. Paste your JSON or YAML above.

Output YAML

Output updates when you press Convert or when auto-validate triggers.

Intro

This tool converts between JSON and YAML right in your browser using the js-yaml library. Nothing leaves your device — conversions, formatting and validation run locally.

Why use JSON ⇄ YAML Converter?

• YAML is human-friendly and often used for configuration (CI files, Kubernetes manifests), JSON is widely used in APIs and web apps.
• Quick conversion, formatting and validation without installing anything.
• Download results, copy to clipboard or minify for compact storage.

How to use JSON ⇄ YAML Converter?

1. Choose conversion direction (JSON → YAML or YAML → JSON).
2. Paste your content in the Input area. Use Prefill Sample to try.
3. Click Convert. Use Format to pretty-print, Minify to compact, and Validate to check syntax.
4. Enable Auto-validate to automatically validate and set the output background color (green = valid, red = invalid) when the input changes.
5. Copy or Download the output when ready.

FAQ

Yes. Select YAML → JSON, paste YAML, and click Convert. The tool parses YAML and outputs JSON.

No. All processing is done in your browser using the included library.

Downloaded files will use .json when output is JSON and .yaml when output is YAML.