How to use the Audio Joiner tool
- Choose two or more audio files.
- Put them in order by dragging or with the arrow buttons.
- Choose what goes between them: nothing, silence or a crossfade.
- Click “Join files” and download the result.
Transitions
- Nothing: tracks follow each other directly, as in a gapless album.
- Silence: a short pause between parts, useful for speech.
- Crossfade: the end of one track fades out while the next fades in, like a DJ mix.
Mixing formats
You can join an MP3 with an M4A voice memo and a WAV recording. All files are converted to the same sample rate; if any file is stereo, the result is stereo.
Privacy
Everything runs in your browser: the audio is decoded by your browser and encoded on your device. Your files are never uploaded.
Frequently asked questions
How many files can I join?
As many as your device memory allows. Dozens of songs are no problem on a computer.
Do the files need the same format?
No. Any formats your browser can read can be combined.
Can I make the volume equal?
Join the files, then use Volume Booster with the normalize option on the result.
Can I join videos?
This tool joins audio. You can add videos, but only their sound is used.