Does trimming reduce audio quality?

No. The tool uses FFmpeg's stream copy mode which cuts the file without re-encoding, so there is no quality loss.

What audio formats are supported?

MP3, WAV, FLAC, OGG, M4A, AAC, OPUS, WMA, AIFF, and any other format that FFmpeg supports.

Is there a file size limit?

There is no strict limit, but files above 200MB may be slow to process depending on your device's memory.

Are my files uploaded to a server?

No. All processing happens in your browser using WebAssembly. Your audio files never leave your device.

Can I trim to exact seconds?

Yes. The sliders move in 0.1-second increments, and the time display shows the exact position in minutes and seconds.

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Editing

Audio Trimmer Online Free

Cut any audio file to the exact length you need. Set a start time and end time using sliders, preview the trimmed audio, then download. Works with MP3, WAV, FLAC, OGG, M4A, AAC, and more. Everything runs in your browser using FFmpeg.wasm — your files never leave your device.