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JSON to YAML

Conversion

Free online JSON to YAML converter. Paste JSON and get clean YAML with customizable indent and flow mode. No data uploaded - runs entirely in your browser.

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How to use the JSON to YAML

JSON to YAML converts your data right in your browser. Enter or paste your input, choose the output format, and get instant results. No file uploads, no server processing, complete privacy.

Why use the JSON to YAML

With JSON to YAML, you avoid the typical conversion hassles: upload limits, queue times, and data privacy worries. Everything runs locally in your browser for instant, secure results.

When to use JSON to YAML

JSON to YAML is useful during API integration work when you need to reshape sample payloads between formats. A third-party service returns XML but your internal tools speak JSON, or a configuration snippet is in TOML but your deployment pipeline requires YAML — paste, convert, copy, done.

Key features of JSON to YAML

With JSON to YAML you avoid the typical conversion pain points: file size caps, queue times, and data privacy violations. Your source data stays in your browser, conversions are instant, and the output is formatted for immediate use in your project.

Common use cases for JSON to YAML

JSON to YAML is used when: sharing data with a teammate who uses a different toolchain that expects a different format; converting colour palette files between design tool export formats; and preparing test fixtures in multiple formats to cover different parser implementations in a test suite.

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Quick answers for JSON to YAML

How is the YAML output formatted?
YAML output uses 2-space indentation, no document markers, and 80-character line width - the defaults for js-yaml and the format most teams use for config files. JSON-style strings stay quoted only where YAML requires it.
Does the converter handle nested arrays and objects?
Yes. Arbitrarily nested JSON structures convert cleanly into YAML's indentation-based format. Round-trip back to JSON via the Swap button to verify nothing was lost.
What happens to JSON null and booleans in YAML?
They convert to YAML's native null, true, and false literals. Strings that happen to look like those keywords are quoted automatically to avoid ambiguity.
Can I convert YAML back to JSON?
Yes - switch the direction tab. The same parser handles both directions, so you can round-trip data without losing structure.
Is my JSON uploaded anywhere?
No. Conversion happens entirely in your browser, so configuration that contains internal hostnames or secrets stays on your device.