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YAML to JSON

Conversion

Free online YAML to JSON converter. Paste YAML and get formatted JSON instantly with pretty-print, compact output, and custom indent. No signup, runs in your browser.

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Quick answers for YAML to JSON

What's the difference between YAML and JSON?
They describe the same shape of data - objects, arrays, strings, numbers, booleans, null. YAML is friendlier to read and supports comments; JSON is stricter and more universal as an interchange format. Most config files in modern tooling are YAML; most APIs speak JSON.
Can the YAML to JSON tool convert in both directions?
Yes. Switch between YAML → JSON and JSON → YAML, or use the Swap button to feed the output back as input. The same parser is used both ways so round-tripping is lossless for standard data.
How is YAML output formatted?
JSON is pretty-printed with 2-space indentation. 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.
Does the converter support YAML anchors and references?
Yes. Anchors (&name) and aliases (*name) are resolved when converting to JSON. Going from JSON back to YAML produces a flat document - JSON has no anchor concept, so duplicated values are simply written out in full.
Is my YAML uploaded anywhere?
No. The YAML to JSON tool runs in your browser using js-yaml. Config files often contain secrets and infrastructure details; nothing is sent over the network.