YAML Tools

YAML Parser

Parse YAML and see exactly how it is interpreted — as a tree or as JSON.

Loading YAML Parser…

How it works

How to use the YAML Parser

  1. Paste YAML

    Or open a file.

  2. Inspect the result

    Check how values were typed — numbers, booleans, strings and nulls.

  3. Copy the JSON

    Export the parsed data.

Why parse to check YAML?

YAML silently converts values such as yes, 010 or 1e3. Seeing the parsed JSON shows exactly what your application will receive.

Built for developers

Why developers use it

  • Private by design

    Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.

  • Instant results

    Output updates as you type, with precise error locations when something is wrong.

  • Works offline

    Once loaded, the tool keeps working without a connection. Install it as an app if you like.

  • Free, no sign-up

    No accounts, no limits, no watermarks.

FAQ

Frequently asked questions

Which YAML version is used?

YAML 1.2, the current specification.

Is my data uploaded anywhere?

No. Everything runs locally in your browser — nothing you paste or open is sent to a server, logged or stored. The tool keeps working offline once the page has loaded.

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