JSON to YAML Online: Convert JSON to Readable Config

2026-08-02

  • JSON
  • YAML
  • config
  • convert
  • online tool
  • tutorial

Why convert JSON to YAML

Kubernetes, Compose, and many CI files prefer YAML, while APIs export JSON. YAML’s indentation is easier to skim. ComTools JSON to YAML (Tools/Json/ToYaml) converts locally in the browser.

Conversion rules (summary)

JSON YAML
Object key: with indented children
Array - item lists
String Plain, or quoted if it contains :, #, newlines, etc.
Number / boolean / null As-is
Empty object / array {} / []

Indentation is 2 spaces. Risky strings are JSON-quoted to avoid YAML misparsing.

Steps

  1. Open JSON to YAML.
  2. Paste JSON (validate first if unsure).
  3. Click Run and copy YAML into your config file.

Nothing is uploaded.

Example

Input:

{
  "name": "ComTools",
  "free": true,
  "tools": ["json", "excel"],
  "user": {
    "id": 1,
    "name": "admin"
  }
}

Output sketch:

name: ComTools
free: true
tools:
  - json
  - excel
user:
  id: 1
  name: admin

Common scenarios

Scenario Notes
JSON config → YAML deploy Convert, commit to repo
Docs readability Paste YAML into README
Need XML instead JSON to XML
From a spreadsheet CSV/JSON convert then YAML

Notes

  • Valid JSON required—no trailing commas or comments.
  • Do not mix tabs into the output (tool emits spaces).
  • Review multiline strings and anchors (&/*) manually if you add them later.
  • Check boolean casing against your YAML 1.1 vs 1.2 runtime.

FAQ

YAML back to JSON?
Use a reverse tool or yq locally; this page is JSON → YAML.

Key order?
Follows object key enumeration—do not rely on order for logic.

vs “YAML beautify” sites?
This generates YAML from JSON structure; it does not re-indent existing YAML.

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