DataFormattools
YAML · Converter

YAML to JSON Converter

Convert YAML to JSON online. Transform YAML configuration files into valid RFC 8259 JSON with accurate type preservation and zero data loss.

Interactive Editor
YAML Input
0 lines · 0 B
1
Auto-executes on edit
JSON Output
0 lines · 0 B
1
100% In-Browser Privacy: All conversions, formatting, and validations run purely on your machine using client-side JavaScript. Your data, code snippets, and environment variables are never transmitted to any server or recorded in logs.
Specifications

How YAML → JSON Works

  • Parses YAML 1.2 syntax into internal data trees.
  • Maps YAML sequences to JSON arrays and mappings to JSON objects.
  • Formats the generated JSON with clean indentation.
Demonstration

Example Input & Output

Converts YAML mappings to JSON objects, sequences to arrays, and literals to standard JSON types.

YAML Input
name: Sandeep
age: 25
skills:
  - TypeScript
  - Astro
settings:
  active: true
  theme: dark
JSON Output
{
  "name": "Sandeep",
  "age": 25,
  "skills": [
    "TypeScript",
    "Astro"
  ],
  "settings": {
    "active": true,
    "theme": "dark"
  }
}
Applications

Common Use Cases

CI/CD Pipeline Data Conversion

Convert GitHub Actions YAML configs into JSON payloads for API consumption.

Kubernetes Object Processing

Convert k8s manifests to JSON for programmatically querying with jq.

Guidelines

Key Specifications & Gotchas

Unquoted Booleans

Values like yes, no, on, off in YAML 1.1 may parse as booleans unless quoted.

Questions

Frequently Asked Questions

How do I convert YAML to JSON?

Paste your YAML document into the left editor; the formatted JSON will appear in the right editor instantly.

Does the converter support nested YAML structures?

Yes, deeply nested mappings and lists are fully supported.

How are YAML arrays converted to JSON?

YAML bullet lists (- item) are converted directly to standard JSON array brackets (["item"]).

Is my YAML uploaded to a server?

No, all conversion logic runs 100% locally in your web browser.

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