Trim Audio — Cut MP3 & Audio Files Online
Load an audio file, drag to select the part you want to keep, and export it as MP3 or WAV — entirely on your device. Your audio is never uploaded.
How to use it
- 1Choose an audio file
Drop an audio file onto the drop zone, or click to select one (MP3, WAV, M4A, OGG and more).
- 2Select a region
Drag the handles on the waveform to choose the start and end of the part you want to keep.
- 3Pick a format
Choose MP3 for a small file or WAV for lossless quality.
- 4Export and download
Click Export to render the trimmed clip and download it. Nothing was uploaded.
A private MP3 cutter
Most online audio cutters upload your file to a server first. This one does not: the audio is decoded and re-encoded with the Web Audio API and a JavaScript encoder running in your browser, so the file never leaves your device.
MP3 or WAV output
Export to MP3 for a small, universally compatible file, or to WAV for lossless audio. The selection you make on the waveform is exactly what gets exported.
Frequently asked questions
Is my audio uploaded to a server?
No. Decoding and exporting both happen entirely in your browser — your audio never leaves your device.
What audio formats can I load?
Any format your browser can decode, which typically includes MP3, WAV, M4A/AAC, OGG and FLAC.
What formats can I export?
MP3 (small and universally compatible) and WAV (lossless 16-bit PCM).
Does trimming reduce quality?
WAV export is lossless. MP3 export re-encodes the selection, which is lossy like any MP3 — at the default bitrate the difference is hard to hear.
Is there a length limit?
There is no artificial limit, but very long files use more memory since everything runs on your own device.
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