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JSON Tool

JSON to YAML Converter – Bidirectional, Quote-Free Output

Convert JSON to YAML — or YAML back to JSON — with smart quoting, clean indentation, and zero uploads. Built for configs, CI pipelines, and Kubernetes manifests.

JSON Input
YAML Output
Output will appear here...

Bidirectional

Convert JSON → YAML for configs, or YAML → JSON for APIs and parsers.

Smart Quoting

Strings only get quoted when needed — clean, readable YAML output for configs and CI files.

Browser-Only

Conversion runs locally — secrets in your CI configs never leave your tab.

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Why JSON ↔ YAML?

APIs and front-end stacks speak JSON; DevOps tooling — Kubernetes, GitHub Actions, Ansible, Docker Compose — speaks YAML. A clean, predictable converter saves you from hand-translating brackets to indentation when the same config has to live in both worlds.

Smart Quoting

A naïve converter wraps every string in quotes. We only quote when YAML actually needs it — strings that look like numbers, booleans, reserved keywords, or contain special characters — so the output stays human-readable.

Key Features

Bidirectional One tool, two directions — toggle between JSON → YAML and YAML → JSON without losing your input.
Round-Trip Safe Convert JSON → YAML → JSON and you get the same data back. Types are preserved — no accidental string coercion.
Nested Arrays & Objects Lists of objects render with the canonical - key: value shorthand DevOps tools expect.
Privacy-First Your CI configs and infra manifests often contain secrets. Conversion happens entirely in your browser.

Pro Tip

YAML treats yes, no, on, and off as booleans. If you have a country code field with the value NO (Norway), it'll silently become false unless quoted. Our converter quotes these automatically.

Walkthrough: Kubernetes ConfigMap

You've got a JSON config from a microservice and need to embed it in a Kubernetes ConfigMap. Paste the JSON, click Convert, and the YAML output drops straight into data: with proper indentation. Need to round-trip it back to validate? Hit ⇅ Swap to flip the direction and re-parse.

Frequently Asked Questions

Does it support YAML anchors and aliases?

No. The YAML parser handles standard mappings, sequences, and scalars but not &anchor / *alias references. For complex YAML, use a dedicated parser server-side.

What about multi-document YAML (--- separators)?

Single-document only. JSON has no native equivalent, so multi-doc YAML would need to be wrapped in a JSON array manually.

Are comments preserved?

No — JSON doesn't support comments, so YAML comments are stripped on conversion. JSON → YAML output is comment-free.

Can I download the result?

Yes. The Download button saves .yaml or .json depending on direction, ready to commit straight into your repo.