CSV / Excel / JSON Converter

ブラウザ内で安全にCSV / Excel / JSON Converterを実行。サーバーへのアップロード不要、登録不要、完全無料。

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CSV / Excel / JSON Converter

DCPIXELのブラウザ内高速処理技術により、ファイルは端末の外に出ることなく安全に処理されます。

🔐 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)

Does this handle large spreadsheets?

It works well for typical spreadsheets, but very large files (tens of thousands of rows) may take longer to process since everything runs in your browser rather than on a server.

What happens to formulas in an Excel file?

Only the calculated values are preserved — formulas themselves are not carried over to CSV or JSON output.

Can I convert JSON that isn't a flat list of objects?

Best results come from a JSON array of similarly-shaped objects (like API responses or database exports) — deeply nested JSON will be simplified when flattened into rows.

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Score 99+ on Google PageSpeed Insights

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CSV / Excel / JSON Converter

CSV / Excel / JSON Converter

よくある質問 (FAQ)

Score 99+ on Google PageSpeed Insights

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