JSON (JavaScript Object Notation) is a lightweight data format used for configuration files, API responses, and data exchange between systems.

YAML (YAML Ain't Markup Language) is a human-readable data serialization format commonly used in Docker Compose, Kubernetes manifests, GitHub Actions workflows, and Ansible playbooks.

How does JSON differ from YAML?

JSON uses braces and brackets with strict quoting rules. YAML uses indentation and is more readable but sensitive to whitespace. Both represent the same data structures — objects, arrays, strings, numbers, and booleans.

Does this tool send my data to a server?

No. All conversion happens entirely in your browser using JavaScript. No data is transmitted or stored.

Utility Workspace

JSON ↔ YAML Converter

Convert between JSON and YAML instantly with validation

BidirectionalInstantClient-sideNo data sent

Sample data pre-loaded

Edit freely, paste your own JSON, or reset back to the example.

JSON Input

Import file

Format

Clear

Valid JSON•19 lines•385 B

Indent:

YAML Output

Copy

Export

Developer Snippets

Ready-to-use examples in multiple languages

Switch between snippets, inspect the highlighted code, and copy the version that fits your stack.

Code Preview

Python

python18 lines

import json
import yaml

# JSON → YAML
json_str = '{"name": "app", "version": "1.0", "debug": false}'
data = json.loads(json_str)
yaml_str = yaml.dump(data, default_flow_style=False)
print(yaml_str)

# YAML → JSON
yaml_input = """
name: app
version: '1.0'
debug: false
"""
data = yaml.safe_load(yaml_input)
json_output = json.dumps(data, indent=2)
print(json_output)

Tool Guide

What is JSON ↔ YAML Conversion?

JSON and YAML are two of the most widely used data serialization formats in software development. JSON (JavaScript Object Notation) is the standard for API responses, package manifests, and web configuration. YAML (YAML Ain't Markup Language) is the preferred format for infrastructure-as-code tools like Docker Compose, Kubernetes, GitHub Actions, and Ansible. While both formats represent the same data structures, they differ in syntax — JSON uses braces and strict quoting, while YAML uses indentation for a cleaner, more readable format. This tool converts between the two instantly in your browser.

Practical Flow

How to Use This Tool

1
Choose Direction: Select 'JSON → YAML' or 'YAML → JSON' from the segmented control at the top.
2
Paste or Import: Type, paste, or import a file (.json / .yaml) into the input editor. Click 'Sample' to load example data.
3
Format: Click the Format button to auto-prettify messy or minified input with proper indentation.
4
View Output: The converted result appears instantly in the output editor with full syntax highlighting.
5
Adjust Options: Change the indentation level (2 or 4 spaces) or enable key sorting for JSON output.
6
Export: Copy the result to your clipboard or export it as a downloadable .yaml or .json file.

Reference

Example

Input JSON: {"name": "my-app", "version": "2.0"} converts to YAML: name: my-app / version: '2.0'

Keep In Mind

Important Note

YAML supports features that JSON does not, such as comments, anchors, and multi-line strings. When converting YAML → JSON, comments are discarded and advanced YAML features are flattened. The conversion preserves all data values but not YAML-specific formatting.

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