JSON to YAML Converter

Runs in browser

Convert JSON to YAML instantly in your browser.

Convert JSON to YAML instantly in your browser. Two-panel layout with real-time conversion. No uploads, no dependencies — pure client-side.

JSON to YAML Converter tool

🔒 Runs in your browser · No uploads · Your data never leaves your device

How to use

  1. Paste JSON

    Paste any valid JSON object or array into the left panel.

  2. Get YAML

    The YAML output appears instantly in the right panel.

  3. Copy or download

    Use the Copy button or download as a .yaml file.

Common use cases

  • Converting API specs to YAML — Transform JSON OpenAPI specs to YAML for use with tools like Swagger UI that prefer YAML format.
  • Creating Kubernetes manifests — Convert JSON configuration to YAML for use in Kubernetes deployments or Helm charts.

Examples

  • Object to YAML

    Simple JSON object converted to YAML.

    Input
    {"name": "app", "version": "1.0.0"}
    Output
    name: app
version: 1.0.0

Frequently asked questions

Is this using a library?
No. The YAML serializer is built from scratch and runs entirely in your browser.
Does my data leave my browser?
No. Everything runs locally — no network requests, no uploads.

Key concepts

YAML
A human-readable data format using indentation and dashes — often preferred for configuration files due to readability.

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Related Guides

→ Json Vs Yaml→ Json To Yaml Example