JSON ↔ YAML
JSONとYAML形式間の変換
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JSON
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YAML
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JSON → YAML
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YAML → JSON
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Privacy & Trust
JSON
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YAML
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コピー
JSON → YAML / YAML → JSON
コピー
JSONとYAML形式間の変換
使い方
テキストを貼り付けまたは入力
テキスト、コード、またはデータを入力エリアに入力します。
オプションを選択
適用する変換やフォーマットを選択します。
結果をコピー
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このツールを使う理由
完全無料
Core tools are free. AI and cloud tools may have daily usage limits.
インストール不要
すべてブラウザで実行されます。ソフトウェアのダウンロードやインストールは不要です。
プライベート＆安全
Local tools keep input on your device. Tools that transmit data are clearly labelled.
モバイル対応
完全レスポンシブ対応 — スマートフォン、タブレット、デスクトップで利用できます。
JSON to YAML Conversion: Choosing the Right Data Format
Key Takeaways
- YAML uses indentation-based structure for human readability, while JSON uses braces and brackets for machine parsing efficiency.
- YAML is the standard for Kubernetes, Docker Compose, CI/CD pipelines, and other DevOps configuration files.
- All conversion happens in your browser — your configuration data never leaves your device.
JSON and YAML are both data serialization formats, but they serve different audiences. JSON excels at machine-to-machine communication with its strict, unambiguous syntax. YAML prioritizes human readability with its clean, indentation-based structure. Converting between them is a daily task for developers working across API development and DevOps infrastructure.
95%+
Of Kubernetes config files use YAML
Common Use Cases
Kubernetes Configuration
Convert JSON API responses from kubectl to YAML for editing, or convert YAML manifests to JSON for programmatic manipulation.
CI/CD Pipeline Development
Convert between JSON and YAML when working across different CI/CD platforms (GitHub Actions uses YAML, some tools output JSON).
API Response to Config File
Transform JSON API responses into YAML configuration files for tools like Ansible, Docker Compose, and Helm charts.
Configuration Debugging
Convert YAML to JSON to validate structure, as JSON parsers provide more precise error messages for syntax issues.
Pro Tips
Be careful with YAML's implicit type coercion — values like 'yes', 'no', 'on', 'off' are parsed as booleans, and '1.0' as a float.
Use JSON for data interchange between services and YAML for human-edited configuration files.
YAML supports comments (# prefix) while JSON does not — this is a major advantage for documented configuration files.
Always validate YAML indentation carefully — a single space error can change the document structure entirely.
All JSON/YAML conversion is performed entirely in your browser. Your configuration data, which may contain infrastructure secrets or deployment details, is never transmitted to any server.