Audio File Joiner

Select several audio files, reorder them, add silence between tracks or a crossfade, and join them into a single file. It automatically decodes and normalizes differences in sample rate, channels, codec, and duration between files — it never concatenates bytes directly. Processed with FFmpeg WebAssembly in your browser.

Media processing on your device (FFmpeg WebAssembly)hasta 20 archivos, 300 MB en total

Drag your files here, or

Up to 20 files, 300 MB total.

Your files are processed on your device and are never uploaded to the server.

Use cases

How to use this tool

  1. Select and order the audio files
  2. Choose silence or a crossfade between tracks
  3. Join them and download the result

Frequently asked questions

Can I join files with different formats?
Yes. The tool automatically decodes and normalizes differences in sample rate, channels, and codec before joining them.
Does it just concatenate the files' bytes?
No. Concatenating bytes directly produces corrupted files when the parameters don't match exactly; this tool always decodes and, when needed, re-encodes.

Related tools

Local media
Audio Trimmer
Local media
Audio Converter
Local recording
Voice Recorder
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