Free browser tool

YAML to JSON
Converter

Parse YAML configuration into standards-compliant, formatted JSON that works cleanly with APIs, scripts, and applications.

✓ No uploads✓ No signup✓ Instant download
Private mode: your data stays in this browser
INPUT · YAML
OUTPUT · JSON

Your converted JSON
will appear here.

Maximum file size: 10 MB · Nothing is uploaded

How it works

From YAML to JSON
in three steps.

  1. 01

    Add your YAML

    Drop a file into the converter or paste your data directly into the input panel.

  2. 02

    Convert locally

    Press convert. Your browser handles the transformation without sending the file to us.

  3. 03

    Copy or download

    Review the result, copy it to your clipboard, or save it as a .json file.

Good to know

Clean conversion.
No surprises.

  • Common YAML mappings, sequences, anchors, and scalar types are supported.
  • The output is formatted with two-space indentation.
  • Helpful parser errors identify invalid YAML syntax.
Common questions

YAML to JSON,
explained.

Are YAML comments included in JSON?+

No. JSON has no comment syntax, so YAML comments are not represented in the converted output.

What happens to YAML anchors?+

Aliases are resolved to their underlying values when the JSON output is created.

Are my files uploaded?+

No. TidyFormat processes the conversion locally in your browser. Your input and output files are not sent to our servers.