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JSON <-> YAML Converter

JSON

JSON1 lines
1

YAML

YAML1 lines
1

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About the JSON YAML

Convert JSON to YAML and YAML to JSON online, free and private. Built for DevOps engineers working with Kubernetes manifests, docker-compose files, and CI pipelines - all conversion happens in your browser, so configs never leave your machine.

JSON and YAML are the two dominant configuration formats. YAML rules Kubernetes manifests, docker-compose files, Ansible playbooks, and GitHub Actions workflows, while most APIs and tools emit JSON. Converting between them is a daily task for DevOps engineers and anyone maintaining infrastructure as code.

This converter translates in both directions with full support for nested objects and arrays. Conversion happens entirely client-side, so proprietary configs and internal service definitions stay on your machine.

Use cases and examples

Turn an API response or Helm values dump into a readable YAML config you can drop into a repository.

Convert a docker-compose.yml into JSON when a tool or platform expects structured input.

Check what a Kubernetes manifest looks like in the other format - useful when YAML anchors obscure the effective structure.

# docker-compose.yml to JSON
{"services": {"web": {"image": "nginx", "ports": ["8080:80"]}}}

How to use

  1. Paste JSON or YAML into the input panel.
  2. The converted output appears in real time.
  3. Use the swap button to change the conversion direction.
  4. Copy the result straight into your Kubernetes or compose file.

Frequently Asked Questions

Can I convert between JSON and YAML bidirectionally? ▾

Yes. Paste JSON to get YAML output, or paste YAML to get JSON. The converter handles both directions automatically.

Is this JSON to YAML converter safe for private configs? ▾

Yes — conversion runs entirely in your browser with JavaScript. Your Kubernetes manifests, CI configs, and secrets are never uploaded to any server, logged, or stored.

Which should I use for Kubernetes manifests, JSON or YAML? ▾

Kubernetes accepts both, but YAML is conventional: it supports comments, anchors, and multi-document files (--- separators) that JSON lacks. Convert JSON specs to YAML when hand-maintaining them.

Why did my YAML convert back to JSON with different key order? ▾

JSON objects are unordered, so tools may serialize keys differently. The data is identical; if order matters for diffs, keep the canonical form in version control and convert one direction only.