How to use the audio joiner
- Drop two or more audio files on the box above (or tap and pick several at once).
- Put them in order with the ↑ ↓ buttons, and choose back to back, a short pause, or a crossfade.
- Preview the result, then tap “Join & save” to download one combined file.
Use it to stitch song parts together, combine voice notes into one message, make a continuous mix with crossfades, or join podcast segments. Files with different sample rates or mono/stereo are matched automatically.
Frequently asked questions
How many files can I join?
As many as your device’s memory allows. On a phone, keep the total under about an hour.
Can I mix different formats?
Yes. You can join an MP3, a WAV and an M4A together; they are converted to the same format automatically.
What does crossfade do?
It fades the end of one file into the start of the next so they overlap smoothly, like a DJ mix.
Are my files uploaded?
No. Everything is processed in your browser on your device.
Is it free?
Yes, with no sign-up and no watermark.