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YAML ↔ JSON Converter — Free Online Tool

Convert YAML to JSON and JSON to YAML instantly. Client-side only — your Kubernetes configs, GitHub Actions, and docker-compose files never leave your browser.

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100% client-side — your configs never leave your browser

Input (YAML)

Output (JSON)

Converted output appears here...

Supports k8s manifests, GitHub Actions, docker-compose, multi-document YAML (---), anchors & aliases, and all standard scalar types. Comments are stripped in output.

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How to Use YAML to JSON Converter

Paste your YAML or JSON

Paste your content in the left panel. The tool auto-detects whether you've entered YAML or JSON.
Select conversion direction

Toggle between YAML → JSON or JSON → YAML using the direction button.
Copy the output

Click Copy to copy the converted output to your clipboard.

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Frequently Asked Questions

Is this YAML converter safe to use with production configs?

Yes — all conversion happens in your browser using JavaScript. Your YAML or JSON content is never sent to any server. This makes it safe for Kubernetes secrets, API keys in config files, and other sensitive configurations.

What YAML features are supported?

The converter supports standard YAML: key-value pairs, nested objects, arrays, multiline strings, comments (stripped in output), anchors and aliases for common configs, and all standard data types (strings, numbers, booleans, null).

Can I convert Kubernetes manifests?

Yes — Kubernetes YAML manifests are among the most common use cases. The converter handles multi-document YAML (separated by ---) and all standard k8s object types.

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