JSON to YAML Converter は何をしますか？
JSON to YAML Converter はブラウザ上でデータやファイルを変換するツールで、結果と制限を明確に示します。 検証済みの機能： JSON to YAML, YAML to JSON, Syntax validation, Local conversion.
When is a round trip safe?
A round trip is appropriate for data made only of JSON-compatible scalars, arrays, and mappings. Do not use JSON as an intermediate format when YAML comments, aliases, custom tags, or exact scalar styles must survive.
使い方
- Choose JSON → YAML or YAML → JSON from Operation.
- Paste one complete document into Input and select Convert.
- Review the validated output; copy or download it before relying on a round trip that may discard YAML-only features.
実際の入出力例
Convert a JSON object to readable YAML
入力
{"project":"KitLumi","private":true,"tools":["JSON","Base64"]}出力
project: KitLumi
private: true
tools:
- JSON
- Base64Strings, booleans, arrays, objects, numbers, and null have equivalents in both formats; YAML comments do not.
一般的なエラーと対処
| 症状 | 原因 | 対処 |
|---|---|---|
| JSON → YAML reports a parse error. | JSON requires quoted keys and strings and does not permit trailing commas or comments. | Correct the source as strict JSON, then run the conversion again. |
| Comments or anchors disappear after YAML → JSON → YAML. | JSON has no representation for YAML comments, anchors, aliases, or tags. | Keep the original YAML as the authoritative file when those features matter. |
Important behavior of JSON ↔ YAML
このツール固有の制限： Comments and anchors cannot survive every round trip because JSON has no equivalent representation.
標準と実装の参考資料
- YAML 1.2.2 specification (opens in a new tab)Defines YAML collections, scalars, anchors, aliases, and tags.
- RFC 8259 — JSON (opens in a new tab)Defines the smaller JSON data model used by the reverse conversion.
JSON ↔ YAML — FAQ
Does the JSON ↔ YAML upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the JSON ↔ YAML accept?
It accepts a JSON document or one YAML document. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the JSON ↔ YAML produce?
It produces validated YAML or two-space-indented JSON. Copy and download controls appear when the output format supports them.
What limitation should I know?
Comments and anchors cannot survive every round trip because JSON has no equivalent representation.
更新内容
実質的な更新： JSON ↔ YAML: Added JSON to YAML, YAML to JSON, Syntax validation, Local conversion, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.