Combine audio files in the order you choose. Trim each clip, add optional crossfades, and download one file for free—no signup or added watermark.
Drop two or more audio tracks here, or import from:
Combine audio files in the order you choose. Trim each clip, add optional crossfades, and download one file for free—no signup or added watermark.
Drop the audio tracks into the uploader in any supported combination of formats.
Move tracks up or down until they play in the intended order.
Select a clip, choose Cut, adjust the handles, and Confirm cut to keep its useful range. Enable Crossfade into next clip only where overlapping audio makes sense.
Listen through the complete timeline, choose an output format, and create one file.
| Transition | What changes | When to use it |
|---|---|---|
| No transition | One track starts immediately after the previous track | Chapters and cleanly edited clips |
| Fade edges | The current track fades in or out | Softer beginnings and endings |
| Crossfade | Overlaps adjacent clips by up to 1.25 seconds, capped at half of either clip | Music or ambience when a short blend sounds appropriate |
Add the separate recordings, move them into topic order, and trim repeated introductions. Leave crossfade off to avoid overlapping words. Preview every join and export a single listening copy.
Place clips in playback order and enable crossfade on the outgoing clip where a short overlap helps. Listen for mismatched levels or rhythm. The tool does not detect beats or automatically align songs.
Combine an introduction, examples, and conclusion. Keep natural pauses in the source clips and leave spoken transitions unoverlapped. The output is one audio file, not an audiobook with navigable chapter markers.
Add supported MP3, WAV, M4A or other audio sources and choose one delivery format. Check volume differences manually. Browser decoding support determines which inputs open; higher-quality output settings do not restore missing source detail.
Use two accessible audio files. This example makes an ordered sequence, not background music underneath speech.
Import the WAV and MP3 together or use Add audio for the second file. Wait for both waveforms to load.
Select the intro and use its up arrow to move it before the recording. Trim unwanted material with Cut and Confirm cut. Leave Crossfade into next clip off if the intro ends with speech.
Press Play project and listen through the join. Choose an output format and Join Audio. Keep the originals; the downloaded file is a new rendered sequence.
Joining requires at least two clips. The project supports up to 10, including duplicates, and up to 30 minutes of rendered output. Large sources can exceed browser memory even when their final selection is short.
Clips play one after another, with optional overlap at joins. There is no independent background-music layer, automatic beat matching, chapter-marker export, or dedicated silence-insertion control.
Sources are decoded and rendered into MP3, WAV, M4A, FLAC, OGG or AAC. MP3 and other lossy outputs are re-encoded; PCM or lossless compression does not restore detail lost in the sources or guarantee identical samples and tags.
No signup, payment or audio watermark is required. Local files are processed in your browser. Remote imports and encoder downloads involve network requests. Save the result before closing; there is no full undo/redo history or saved cloud project.
Crossfade overlaps adjacent audio, so its duration is subtracted from the total. Check any trimmed ranges and speed changes too. Turn crossfade off for an end-to-end sequence.
Select the outgoing clip and turn off Crossfade into next clip. Short edge fades are different from overlapping two clips; preview the boundary again.
Adjust each selected clip’s volume and listen through the transition. Peak normalization is not automatic perceived-loudness matching and can also raise background noise.
Keep an existing pause while trimming, or include your own silent audio file as another clip. There is no insert-silence button on this page.
The browser project accepts up to 10 tracks so memory use remains manageable.
Yes. Supported files are decoded to a common timeline and exported in the format you choose.
Yes. Use the move controls to arrange the exact final playback sequence.
Yes. Select each track and adjust its start and end range before export.
Crossfade overlaps the end of one track with the beginning of the next for a smoother transition.
Yes. The complete rendered sequence can be previewed before downloading.