JSON to YAML Converter

Drop a JSON file below and get YAML back in seconds — converted on your own device, not uploaded anywhere.

Drop a file here or click to choose one — JSON

Processed entirely in your browser using a Web Worker. Nothing is uploaded.

What is JSON?

JSON (JavaScript Object Notation) is a plain-text format for structured data — objects, arrays, strings, numbers, booleans and null, nested as deeply as needed. It's the standard format for web APIs and configuration files, and every modern programming language can parse it natively.

What is YAML?

YAML ("YAML Ain't Markup Language") is a plain-text format for the same kind of structured data as JSON, written to be easier for humans to read and edit — indentation instead of braces, no required quotes on simple strings. It's common in configuration files (Docker Compose, GitHub Actions, Kubernetes) and is a superset of JSON: valid JSON is also valid YAML.

How it works

  1. Drop your JSON file into the box above, or click to choose one.
  2. Your browser parses it and rewrites it as YAML instantly — nothing is sent anywhere.
  3. Download the YAML file. That's it.

Other conversions

CSV to JSON

feeding spreadsheet data into an API, script or database that expects JSON

JSON to CSV

opening API output or a config file in a spreadsheet

YAML to JSON

feeding a YAML config file into a tool or script that only reads JSON

CSV to YAML

turning a spreadsheet export into a human-editable YAML config file

YAML to CSV

opening a YAML config file's data in a spreadsheet

Questions.

Is my file uploaded to a server?

No. The conversion runs entirely in your browser — your JSON file never leaves your device.

Does anything get lost converting to YAML?

No — YAML is a superset of JSON's data model, so every value, nested object and array carries over exactly.

Is there a file size limit?

No limit is enforced by the tool itself — the practical ceiling is your browser's available memory, which handles typical data files easily.

Is this really free?

Yes — every format conversion on ByteRivet is free, with no account or daily limit.

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