Audio Trimmer & Cutter
Trim, cut, and slice MP3, WAV, and AAC audio files directly in your browser with millisecond precision.
How to Use Audio Trimmer & Cutter
- Upload your audio file (MP3, WAV, AAC, M4A).
- Specify your desired start and end times in seconds.
- Click Trim Audio to process instantly.
- Download your clean trimmed audio file.
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Frequently Asked Questions
How does the Audio Trimmer & Cutter work?
The Audio Trimmer uses your browser's native Web Audio API to decode your audio file into PCM channel data, slice the exact millisecond range between your specified start and end timestamps, and encode the slice into a clean 16-bit PCM WAV file without any server upload.
Which audio formats can I trim?
You can upload standard audio formats supported by your browser, including MP3, WAV, AAC, OGG, and M4A. The trimmed segment is exported as an uncompressed 16-bit studio WAV file.
Are my audio files uploaded to a server?
No. 100% of the trimming process happens locally in your device's browser memory. Your audio files never leave your computer or phone.
Does trimming an audio file reduce audio quality?
No. Because the sliced audio segment is encoded into uncompressed 16-bit PCM WAV, no lossy recompression artifacts or generation loss are introduced.