JSON to YAML Converter

Convert JSON to YAML

JSON Input

YAML Output

What Is This Tool?

The JSON to YAML Converter transforms JSON data into clean, readable YAML using 2-space indentation, so you can drop it straight into config files like Kubernetes manifests, Docker Compose, or CI pipelines. Strings are only quoted when necessary to avoid ambiguity. Everything runs locally in your browser.

How to Use

Paste your JSON into the input box.

Click Convert to generate YAML.

Copy the result or download it as a .yaml file.

Features

Clean 2-space indented YAML output
Smart quoting — only quotes strings when required
Supports nested objects and arrays
Copy to clipboard or download as a file
100% client-side — nothing leaves your browser

Examples

Before (JSON):

{
  "name": "Ada Lovelace",
  "active": true,
  "roles": ["admin", "editor"]
}

After (YAML):

name: Ada Lovelace
active: true
roles:
  - admin
  - editor

Common Use Cases

Converting API responses into Kubernetes or Docker Compose config
Turning JSON config into YAML for CI/CD pipelines
Making JSON data more human-readable for documentation
Migrating configuration between JSON-based and YAML-based tools

Frequently Asked Questions

When does the converter quote a string?

Only when leaving it unquoted would change its meaning — for example if it looks like a number, boolean, or null, contains a colon or special YAML character, or has leading/trailing whitespace.

How are arrays represented?

Arrays are rendered as YAML block sequences using a leading hyphen for each item, with nested objects indented beneath their hyphen.

Does it support very deeply nested JSON?

Yes, the converter recursively walks the entire structure, so deeply nested objects and arrays are converted correctly with proper indentation at every level.

What YAML indentation does it use?

Always 2 spaces per nesting level, which is the most widely used convention and matches tools like Kubernetes and Docker Compose.

Is my data uploaded anywhere?

No. Conversion happens entirely in your browser using JavaScript. Nothing is sent to a server.

Can I download the result?

Yes, click Download to save the YAML output as a data.yaml file.