JSON検証
JSONフォーマット & エラー検出
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ヒント：JSONコードを入力し、「検証 & フォーマット」ボタンをクリックすると、ツールが自動的にJSON形式が正しいかを検出します。正しい場合、フォーマット結果を表示；不正の場合、具体的なエラー情報とエラー位置を表示。
About JSON Validator
Check whether JSON is valid and locate syntax errors quickly. The validator reports useful error context so you can fix missing commas, unclosed strings, unmatched brackets, and illegal characters.
Common Uses
- Validate API request and response payloads.
- Find syntax errors in config files.
- Check JSON copied from logs, docs, or databases.
- Prepare JSON before formatting or diffing.
FAQ
Can the validator show line and column information?
Yes. When possible, MKDiff shows line, column, position, and a focused error message.
Does it support comments in JSON?
Standard JSON does not support comments. Remove comments before validation unless your target system accepts a JSON-like format.
Can I format valid JSON after validation?
Yes. The validator can format valid JSON so the structure is easier to read.
Is validation done server-side?
No. Validation runs in the browser and your JSON stays on your device.