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Audio Merger

Join several audio files into one and download as WAV — in your browser, nothing uploaded.

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Drop audio files to join them (in order).

or tap to choose files

The first run loads the engine (~25 MB) once.

How to use

  1. Drop two or more audio files in — they join in the order you add them.
  2. Press Merge & download.
  3. Save the single combined file as a WAV.

FAQ

Are my files uploaded anywhere?

No. The files are joined entirely in your browser using ffmpeg compiled to WebAssembly. They never leave your device. The engine (about 25 MB) downloads once on first use and is then cached.

In what order are the files joined?

In the order you added them, which is shown above the button. Add them one batch at a time in the sequence you want them to play.

Can the files be different formats or sample rates?

Yes. Each file is decoded and the pieces are joined, then exported as a single WAV — so mixing MP3, M4A and WAV inputs works fine.