JSON ↔ YAML Converter

Convert data between JSON and YAML formats instantly — in both directions. Essential for DevOps, configuration files, Kubernetes, and Docker Compose.

What Does This Tool Do?

JSON and YAML are both formats for representing structured data, but they look very different. JSON uses braces and quotes; YAML uses indentation and is more human-readable. This tool converts between the two formats in either direction — paste JSON to get YAML, or paste YAML to get JSON.

Key Features

🔄

Both Directions

JSON → YAML and YAML → JSON — switch between them with one click.

✅

Validates Input

Checks that your JSON or YAML is valid before converting.

📋

Clean Output

Produces properly indented, human-readable output in either format.

⚡

Instant

Converts any size document immediately.

How to Use This Tool

Paste your JSON or YAML into the Input box.
Select the direction: JSON → YAML or YAML → JSON.
Click Convert to transform the data.
Copy the converted output from the Output box.

How It Works

For JSON to YAML: the JSON is parsed into a JavaScript object, then serialized to YAML format using proper indentation, handling all data types (strings, numbers, booleans, null, arrays, objects). For YAML to JSON: the YAML is parsed line by line into a JavaScript object, then serialized to formatted JSON.

Common Use Cases

💡 Kubernetes & Docker

Convert Kubernetes manifests and Docker Compose files between JSON and YAML formats.

💡 Configuration Files

Transform application config between JSON (code-friendly) and YAML (human-friendly) as needed.

💡 CI/CD Pipelines

Convert pipeline configuration files between JSON and YAML for different CI/CD systems.

💡 API to Config

Transform JSON API responses into YAML configuration files and vice versa.

Frequently Asked Questions

Which should I use — JSON or YAML?

Use JSON for data transmission between machines (it's faster to parse). Use YAML for configuration files that humans need to read and edit (it's cleaner and allows comments).

Does YAML support comments?

Yes — YAML supports comments with the # character. Note that comments are lost when converting YAML to JSON, since JSON has no comment syntax.

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