100% client-side — files never leave your device

JSON to YAML

Turn JSON into clean block-style YAML with proper indentation — ready to drop into a Kubernetes manifest, CI pipeline or Compose file.

How it works

  1. Paste your JSON. An API response, a config export, or anything else with a valid JSON body.
  2. Get readable YAML. Two-space indentation, block style, no anchors — the layout humans expect.
  3. Copy into your repo. Copy to the clipboard or download a .yaml file directly.

Why teams move config from JSON to YAML

JSON is a fine wire format and a poor configuration language: no comments, mandatory quoting, and punctuation noise that makes diffs harder to read. YAML exists because humans edit these files by hand and review them in pull requests.

What conversion cannot restore

Comments are the main thing YAML gives you that JSON never had — the converter cannot invent them, so plan to add explanations after converting. Key order is preserved, but any formatting intent in the original JSON is not.

Quoting rules worth knowing

Strings that look like other types need quotes to survive: version numbers ("1.10"), leading-zero identifiers, yes/no, and anything containing a colon followed by a space. The emitter adds these quotes automatically — do not remove them by hand.

Reverse direction: YAML to JSON. Validating first helps: JSON formatter and validator.

Frequently asked questions

Will the YAML be readable, or one long line?

It is emitted in block style with two-space indentation and wrapped at 100 columns — the conventional layout for Kubernetes manifests and CI configuration.

Are repeated objects turned into anchors?

No. Anchors are disabled deliberately: they make files shorter but much harder to read and to diff, and many tools handle them poorly.

Is my JSON uploaded?

No. Conversion runs in your browser, so payloads containing tokens or customer data stay on your machine.

Why does my JSON fail to convert?

Strict JSON forbids trailing commas, single quotes and comments. Run it through the JSON formatter first — it reports the exact position of the problem.

Will strings that look like numbers or booleans stay strings?

Yes. The YAML emitter adds quotes where a plain value could be interpreted as another type, including leading-zero identifiers and boolean-like words. Removing those quotes by hand can change the data when another parser reads it.

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