Audio Joiner

Join multiple audio files into one file securely, right in your browser. No uploads, no privacy risks.

Merge Your Audio Files
Upload two or more audio files (MP3, WAV, AAC, etc.) and merge them with a single click. Processing happens locally via WebAssembly.
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How It Works

  • 1Select multiple audio files – Drag & drop or click to browse. Files stay in your browser.
  • 2Reorder – Arrange the audio files in the order you want them to appear in the final file.
  • 3Merge – Click the button; FFmpeg loads (once) and processes the audio locally.
  • 4Download – Get your merged audio instantly. No limits, no watermarks.
Privacy First
Why we’re different

Zero Server Upload

Your audio files never leave your computer. All processing happens inside your browser using WebAssembly.

No Data Retention

We don’t store, track, or analyze your files. After you close the tab, everything is gone.

Unlimited Size

Merge large audio files (1GB, 5GB or even 10GB). No artificial limits because everything runs on your hardware.

Recent Files

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Files are stored locally in your browser. Maximum 10 recent files.