UtilitySansar
すべてのツール
カテゴリ
DeveloperMathTextDesignEncodingSecurityMarketingDataFinanceCloud
Data

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.

ツール要約

このツールは構造化された入力を受け取り、サーバーへアップロードせずにブラウザで決定的な出力を返します。

ツール名
YAML to JSON Converter
入力の目的
変換・検証・分析するソースコンテンツを入力してください。
出力の目的
コピー・再利用・デバッグに適した正規化された出力を受け取ります。
入力例
name: api replicas: 3 env: - prod - staging
出力例
{ "name": "api", "replicas": 3, "env": [ "prod", "staging" ] }

Paste YAML above and click Convert to JSON.

ツールの紹介

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.

ツール概要

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.

ユースケース

  • 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

入力／出力の例

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

よくある質問

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.

Share this tool

他のツールを見る

下記の Data カテゴリで関連ユーティリティを探す。

Data をすべて見る

関連ツール

役に立ちそうな厳選ユーティリティ