PlayWithJSON

JSON ↔ YAML Converter (with JSON5)

Bidirectional & Real-time

Convert standard JSON and JSON5 to clean YAML, or convert YAML back to strict JSON or JSON5.

YAML Indentation:
Input JSON / JSON5JSON/JSON5
Lines: 49Chars: 929Size: 0.91 KB (929 B)
JSON
Output YAMLYAML
Lines: 28Chars: 538Size: 0.53 KB (538 B)
YAML
Mode: JSON / JSON5 ➔ YAML
100% Client-Side • In-Memory Zero Latency

JSON to YAML & YAML to JSON Converter Online (with JSON5)

Convert seamlessly between JSON, JSON5, and YAML with bidirectional real-time compilation. Perfect for DevOps engineers, cloud architects, and full-stack developers writing Kubernetes manifests, Docker Compose stacks, GitHub Actions workflows, or OpenAPI specs.

PlayWithJSON supports full JSON5 syntax (including single quotes, unquoted keys, and comments). Everything runs client-side in your browser for zero latency and complete data privacy.

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Why Use PlayWithJSON?

  • Bidirectional live conversion: JSON ➔ YAML and YAML ➔ JSON
  • Full JSON5 support: comments, unquoted keys, and trailing commas
  • Custom indentation: 2-space or 4-space YAML and JSON
  • Target output selection: Strict JSON or readable JSON5
  • 100% Client-side in-browser execution with zero telemetry

Key Features of Our JSON ↔ YAML Converter

Bidirectional Live Conversion

Switch instantly between converting JSON to YAML and converting YAML back into JSON.

Full JSON5 Superset Support

Accepts single quotes, unquoted keys, and comments, converting them gracefully into clean YAML.

Clean YAML Formatting

Generates idiomatic, indentation-compliant YAML compatible with Kubernetes and Docker Compose.

Real-Time Syntax Validation

Detects malformed brackets, invalid indentation, or duplicate keys with precise error indicators.

Flexible Indentation Control

Choose 2-space or 4-space indentation for both YAML and JSON outputs.

One-Click Copy & Export

Copy cleanly to clipboard or download as .yaml or .json files with a single click.

How to Convert JSON to YAML & YAML to JSON Online

1

Choose Direction & Paste Data

Select JSON ➔ YAML or YAML ➔ JSON, or click the Swap button. Paste your payload into the left panel.

2

Customize Format Options

Select 2-space or 4-space indentation, or choose JSON5 output when converting YAML.

3

Copy or Download Result

Review the live output in the right panel and copy to clipboard or download as .yaml or .json.

JSON to YAML Conversion Example

Input: JSON Object
{ "service": "billing-api", "replicas": 3, "ports": [8080, 8443], "enabled": true }
Output: Clean YAML
1service: billing-api
2replicas: 3
3ports:
4 - 8080
5 - 8443
6enabled: true

Valid vs Invalid Indentation in YAML

Invalid YAML Tab Indentation
1services:
2 web: # Error: YAML forbids literal tab characters for indentation
3 image: nginx
YAMLException: Tab characters are forbidden as indentation in YAML specifications. Use spaces instead.
Valid 2-Space Indented YAML
1services:
2 web:
3 image: nginx

Compatibility & Supported Standards

JSON to YAML real-time conversion
YAML to JSON strict RFC 8259 compilation
YAML to JSON5 with unquoted keys and single quotes
Full JSON5 input parsing with comments (// and /* */)
Kubernetes deployment and service YAML compatibility
Docker Compose stack file validation
GitHub Actions workflow YAML validation
2-space and 4-space customizable indentation
Multi-line string and folded block scalar support
Live byte size and line count statistics
100% in-browser memory client-side execution
Frequently Asked Questions

Frequently Asked Questions about JSON ↔ YAML

JSON relies on explicit brackets ({}) and quotes (""), making it ideal for high-speed machine-to-machine APIs. YAML uses whitespace indentation and minimal punctuation, making it far more readable for human configurations like Kubernetes and Docker.

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