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YAML to JSON Converter

Paste YAML and get structured JSON back. Handy for debugging CI configs, feeding YAML into a tool that only speaks JSON, or just inspecting what your config actually resolves to.

Tool-Zusammenfassung

Dieses Tool nimmt strukturierte Eingaben entgegen und liefert deterministische Ausgaben im Browser, ohne Server-Upload.

Tool-Name
YAML to JSON Converter
Eingabe-Intention
Liefere Quellinhalte zum Umwandeln, Validieren oder Analysieren.
Ausgabe-Intention
Erhalte normalisierte Ausgabe, geeignet zum Kopieren, Wiederverwenden oder Debuggen.
Beispiel-Eingabe
name: api replicas: 3 env: - prod - staging
Beispiel-Ausgabe
{ "name": "api", "replicas": 3, "env": [ "prod", "staging" ] }

Paste YAML above and click Convert to JSON.

Tool-Einführung

Paste YAML and get structured JSON back. Handy for debugging CI configs, feeding YAML into a tool that only speaks JSON, or just inspecting what your config actually resolves to.

Tool-Überblick

The converter tokenizes your YAML line by line, tracks indentation to build the hierarchy, and resolves scalars to their JSON-native types (numbers, booleans, null, strings). Both block style (indented) and flow style ([a, b] / {k: v}) mappings and sequences are supported, along with comments, single- and double-quoted strings, and the usual `null`/`~`/`true`/`false` aliases.

Anwendungsfälle

  • Inspect a Kubernetes manifest as JSON
  • Pipe a YAML config into jq or a JSON Schema validator
  • Convert Docker Compose files for tools that require JSON
  • Debug why a CI config is being parsed a certain way

Eingabe/Ausgabe-Beispiele

Eingabe-Intention
name: api
replicas: 3
env:
  - prod
  - staging
Ausgabe-Intention
{
  "name": "api",
  "replicas": 3,
  "env": [
    "prod",
    "staging"
  ]
}
Comments are stripped and flow-style arrays are supported.
Eingabe-Intention
# deployment config
image: nginx:1.25
ports: [80, 443]
labels:
  app: web
  tier: frontend
Ausgabe-Intention
{
  "image": "nginx:1.25",
  "ports": [80, 443],
  "labels": {
    "app": "web",
    "tier": "frontend"
  }
}
Scalars resolve to their JSON-native types.
Eingabe-Intention
greeting: 'hello world'
count: 42
enabled: true
nothing: null
Ausgabe-Intention
{
  "greeting": "hello world",
  "count": 42,
  "enabled": true,
  "nothing": null
}

FAQ

Is this YAML to JSON converter free?+
Yes. It runs entirely in your browser, with no sign-up, no file-size gates, and no ads inside the tool.
What subset of YAML is supported?+
Block and flow mappings/sequences, plain and quoted scalars, comments, and null/boolean/number resolution. Anchors (&), aliases (*), tags (!!type), and multi-line scalars (|, >) are not yet supported.
Will it coerce numeric strings like "007"?+
Leading-zero strings are kept as strings. Only values that match a strict integer or float pattern are converted to numbers.
Is my data sent to a server?+
No. Parsing and conversion happen entirely in your browser — the page never talks to a backend.
Can I convert Kubernetes, Docker Compose, or GitHub Actions YAML?+
Yes. Those configs use the block/flow features this converter supports. Paste the file and the resulting JSON is ready for jq, JSON Schema validators, or direct import into code.

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