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YAML to JSON Converter — Free Online Tool

Bidirectional conversion between JSON, XML, YAML, and CSV config serialization formats fully client-side.

🔒 Processed entirely in your browser — nothing you enter here is ever uploaded.

The result appears on this page after you run the tool. Nothing you enter is uploaded.

Processing... 0%
Analyzing syntax tokens
Transpiling document nodes
Beautifying layout
Done

Result

About this tool

This page opens the data converter preset to YAML as the source and JSON as the target — paste the YAML, run the conversion and grab the JSON output.

YAML to JSON is what you need when a config written for humans has to feed a machine: REST APIs, JavaScript code, database imports and many CLIs expect strict JSON rather than YAML's indentation syntax.

The full tool converts between JSON, XML, YAML and CSV in any combination — all client-side, so pipelines, secrets and infrastructure configs stay on your machine.

Example. The JSON text {"name":"Ada"} becomes the YAML line name: "Ada".

Limit. The YAML parser only understands indented key lines and dashes, so anchors, multiline block scalars, and tags are rejected.

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Category overview

Accepted Formats & Rules

  • Bidirectional conversion for JSON, XML, YAML, and CSV.
  • Auto-generation of TypeScript declaration types.
  • Offline serialization parser running locally.