Developer Tools

JSON to YAML Converter

Convert JSON into clean, config-ready YAML — 2-space indentation, sensible quoting, ideal for Kubernetes, CI pipelines, and app config.

100% browser-side processing — nothing is uploaded

JSON → YAML: Render JSON as readable YAML. Output updates live as you type — or press Ctrl/Cmd + Enter.

Results update live as you type.
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How to convert JSON to YAML

  • Paste JSON

    Any valid JSON document — object, array, or scalar. It validates live as you type.

  • Convert

    The YAML output uses 2-space indentation and quotes strings only where YAML requires it.

  • Drop into config

    Copy or download the .yaml and paste it into your manifest, pipeline, or config file.

Every JSON document is already valid YAML — so why convert?

YAML 1.2 is a superset of JSON: you could paste JSON into most YAML parsers unchanged. The point of converting is the idiomatic block style humans actually maintain — indentation instead of braces, dash lists instead of bracketed arrays, unquoted strings where safe. That is the style Kubernetes manifests, GitHub Actions workflows, and docker-compose files are written in, and the style reviewers expect in a pull request touching config.

How quoting decisions are made

The converter quotes strings only when leaving them bare would change their meaning: values that look like numbers or booleans ("true", "007"), strings with leading or trailing spaces, YAML-special characters like colons followed by spaces, and reserved words such as null. Everything else stays unquoted for readability. Keys and value data are preserved exactly — converting back to JSON returns the identical document. Note that JSON has no comments, so the output has none either; add comments after conversion if your config needs them.

JSON to YAML Converter FAQ

Will converting change my data?

No. The YAML output parses back to exactly the same data as the input JSON. Only the surface syntax changes — converting back with YAML → JSON round-trips identically.

Why are some strings quoted and others not?

YAML only needs quotes when a bare value would be misread — strings that look like numbers or booleans, contain special characters, or have significant whitespace. The converter quotes exactly those cases.

Can I add comments?

JSON cannot express comments, so none appear in the output. YAML supports # comments — add them after converting; they will survive future YAML editing but will be dropped if you convert back to JSON.

Is the output valid for Kubernetes and CI files?

Yes — it is standard block-style YAML with 2-space indentation, the convention used by Kubernetes, GitHub Actions, GitLab CI, and docker-compose.

Does my config leave the browser?

No. Conversion runs locally, so manifests containing internal URLs or secrets are never uploaded.