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YAML ⇄ JSON Converter

Convert YAML and JSON with multi-document YAML, JSON-compatible or core schemas, error locations, indentation, key sorting, and download.

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How to Use

  1. 1

    Choose conversion direction.

  2. 2

    Paste YAML or JSON in the input area.

  3. 3

    Read the converted output instantly on the right.

Features

  • ✓Convert multiple YAML documents into a JSON array
  • ✓Switch between JSON-compatible and core YAML schemas
  • ✓Show syntax-error line, column, and nearby snippet
  • ✓Two/four-space indent, recursive key sorting, copy, and download

FAQ

Q. Does it support YAML comments?

A. It parses standard YAML, but comments are not preserved in JSON output.

Q. Can I customize output indentation?

A. Yes. Choose two or four spaces. JSON-to-YAML conversion can also sort keys recursively.

Technical Notes

YAML parsing uses js-yaml loadAll, which recognizes document separators. One document becomes a single JSON value; multiple documents become a JSON array.

The JSON-compatible schema keeps date-like values as text. The core YAML schema may resolve timestamps to Date values that serialize as ISO strings in JSON.

Security & Privacy

All conversion runs locally in your browser with no external upload.

Useful for handling private config snippets safely.

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