Convert JSON to YAML

Paste JSON and get tidy, readable YAML as you type – just right for Kubernetes manifests, Docker Compose, GitHub Actions and app configs. Nothing leaves your browser.

Indent

JSON input

YAML output

Converted on your device. Your data never leaves your browser.

Turning JSON into YAML

1
Paste the JSON into the input box, drop a .json file onto it, or press Open file.
2
Pick 2- or 4-space indentation – the YAML updates as you type.
3
Copy the YAML or press Download .yaml.

What makes this JSON to YAML converter handy

Readable output

Keys keep their order, long strings aren't wrapped, and values are only quoted where YAML needs it.

Checks as you go

Invalid JSON is flagged straight away with the parser's error message, so you can fix it quickly.

Ready for configs

The output drops straight into Kubernetes, Docker Compose, Ansible, GitHub Actions and other YAML tools.

Private and instant

Everything runs in your browser, so secrets in your configs are never uploaded.

What people use the JSON to YAML converter for

Write Kubernetes manifests

Turn JSON specs into readable YAML.

Docker Compose and CI files

Produce YAML for GitHub Actions, GitLab CI and Compose.

Make configs easier to read

YAML is simpler to review and comment than JSON.

OpenAPI and Swagger specs

Switch API specs from JSON to YAML.

Also searched for as: JSON to YAML converter, JSON to YML, config converter and Kubernetes YAML from JSON.

Quick data conversions in the browser

Switch between CSV, JSON and YAML, or turn images into Base64, without installing anything. Everything is processed in your browser, so exports, customer data and API keys stay on your machine rather than going to someone else's server.

Questions & answers

How is YAML different from JSON?

They store the same kinds of data, but YAML uses indentation in place of braces and quotes, making it easier to read and edit by hand – which is why config files favour it.

Will Kubernetes and Docker Compose accept the YAML?

Yes. It's standard YAML 1.2 that Kubernetes, Docker Compose and other tools read. Strings YAML could misread, like "yes" or "1.0", are quoted for you.

Is the key order kept?

Yes – keys appear in the same order as in your JSON.

Do my files get uploaded anywhere?

Never. The work is done by JavaScript running in your own browser, on your own device. Nothing is sent to a server or kept anywhere, which makes it safe for personal photos and sensitive data – and it carries on working even on a patchy connection.

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Guides for this tool

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