Convert IDN domains (Unicode ↔ Punycode)

1. Paste input or upload a file.
2. Run the main action (convert / format / generate).
3. Review the output and make sure it looks correct.
4. Download the output when you're ready.

Best practices

• For best performance, try with smaller inputs first.
• Preview the output before downloading or sharing it.
• Avoid pasting sensitive data on shared devices.

プライバシー

一部のツールはブラウザで実行されます。機能によってはサーバー処理が必要な場合があります。