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YAML to JSON

Convert YAML documents to formatted JSON with syntax validation.

About the YAML to JSON

The YAML to JSON converter validates YAML and outputs formatted JSON, which is useful for APIs, JSON Schema checks and seeing exactly how YAML values are interpreted.

Conversion happens in your browser, so your files and records stay private.

How to use the YAML to JSON

  1. Paste YAML or open a file.
  2. Fix any error at the reported location.
  3. Copy or download the JSON.

Frequently asked questions

What happens to comments?

JSON has no comments, so they are dropped.

How are anchors and aliases handled?

They are expanded, so the JSON contains the full repeated values.