音声カッター

音声ファイルの開始・終了位置をミリ秒単位で指定して必要な部分だけを切り出し保存。

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音声カッター

動画BGMや着信音に最適なパートをブラウザだけで簡単に編集・抽出できます。

🔐 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)

What format is the downloaded file?

WAV — a universally compatible, uncompressed format. Re-compress it afterward with another tool if you need a smaller MP3-style file.

Can I trim a very long recording?

Yes, though very long files use more memory since the whole file is decoded in your browser — for hour-plus recordings, performance depends on your device.

Is my audio uploaded anywhere?

No. Decoding, trimming, and encoding all happen locally using your browser's built-in Web Audio API.

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Score 99+ on Google PageSpeed Insights

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音声カッター

音声カッター

よくある質問 (FAQ)

Score 99+ on Google PageSpeed Insights

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