JSON整形

圧縮されたJSONコードをインデントして見やすく整形・検証。構文エラーの箇所もハイライト表示。

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Input

Output

Click Format or Minify to process your JSON

JSON整形

APIレスポンスや設定ファイルのJSONを素早く確認。機密データを外部サーバーに送ることなく、ブラウザ内で安全にフォーマットします。

🔐 100% Private — Client-Side Execution

All processing happens inside your browser using WebAssembly and HTML5 Canvas. Zero file uploads, zero server tracking. Compliant with LGPD & GDPR.

よくある質問 (FAQ)

Is my JSON data sent to a server?

No. Parsing, formatting, and minifying all happen locally in your browser using standard JSON parsing — nothing is transmitted anywhere.

What happens if my JSON is invalid?

You'll see the specific parsing error message so you can locate and fix the problem in your input.

What is the difference between Format and Minify?

Format adds indentation and line breaks for readability. Minify strips all unnecessary whitespace to produce the smallest possible file size.

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JSON整形

Input

Output

JSON整形

よくある質問 (FAQ)

Score 99+ on Google PageSpeed Insights

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