How to use
- Open a file; use Add file at the end to join more files after it.
- Drag on the waveform (or use Shift + arrow keys, or type start and end times) to select; Cut, Copy, Paste, Delete, Trim, Silence, Fade, Gain, Normalize and Reverse apply to the selection.
- Export in your chosen format.
Worked example
Remove the first 4.2 s of silence from a podcast, add a 2-second fade-out at the end, and export a 128 kb/s MP3.
Supported formats and limits
| Input | MP3, WAV, M4A/AAC, Ogg/Opus, FLAC, WebM audio |
|---|---|
| Output | WAV, MP3, M4A (AAC), Ogg Opus, FLAC |
| Limits | About 23 minutes of 48 kHz stereo (46 minutes mono), decoded into memory; up to 30 undo steps while memory allows. |
| Engine | Mediabunny (WebCodecs) or Web Audio decoding; sample-accurate edits in memory with undo; WAV/FLAC/MP3/AAC/Opus encoding via Mediabunny |
Limitations
- Very long files use a lot of memory because audio is decoded fully.
Questions
Do effects apply to the whole file or a selection?
Cut, delete, trim, silence and fades work on the selection. Gain, Normalize and Reverse apply to the selection, or to the whole clip when nothing is selected.
How long a file can I edit?
About 23 minutes of 48 kHz stereo (46 minutes mono), because the audio is decoded into memory. Up to 30 undo steps are kept while memory allows.
Privacy
Runs on your device. Files and text are processed in this browser tab and are not uploaded.
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