Audio editing

Audio Silence Trimmer

Drop in a voice memo, podcast clip or sample and cut the dead air at the start and end automatically. Adjust the threshold, keep a little padding and download the result.

Drop an audio file here or click to chooseMP3, WAV, M4A, OGG, FLAC and most formats your browser can play

Runs entirely in your browser. Nothing is uploaded to any server.

Why trim silence from audio

Tighter recordings

Voice notes, podcasts and samples start right on the sound instead of after dead air.

Seamless samples

Trimmed one-shots trigger instantly in samplers and video editors.

Private and quick

The file is processed in your browser, so nothing is uploaded or queued.

How to trim silence

  1. Add your audioDrop a file or click to choose one. It is decoded in your browser.
  2. Tune the detectionMove the threshold until the shaded areas cover just the silence, and set some padding.
  3. Preview and downloadCompare the original and trimmed versions, then download the WAV.

How silence detection works

The audio is split into 10 millisecond frames and the loudness of each frame is measured as an RMS level in decibels. The first and last frames louder than your threshold mark where the sound begins and ends. Everything outside them, minus the padding you choose, is removed.

A short fade is applied at each new edge so the cut does not click. Padding keeps a little air around the sound, which keeps breaths and soft attacks natural. The result is saved as a 16-bit WAV at the original sample rate.

-45 dB default

A good starting point for spoken word recorded in a quiet room.

Raise for noisy files

If background hiss stops trimming, move the threshold toward -30 dB.

Lower for soft starts

Quiet intros or fade-ins need a lower threshold such as -60 dB.

Audio silence trimmer FAQ

Does it remove silence in the middle?

No. Only leading and trailing silence is removed, so pauses inside speech or music are kept.

Why is the output a WAV file?

WAV is lossless and can be created directly in the browser. Convert it to MP3 afterward if you need a smaller file.

Will the audio quality change?

No. Samples are copied exactly at the original sample rate, apart from the tiny fades at the cut points.

Can I use video files?

Often, yes. Most browsers can decode the audio track of MP4 and WebM files, and the result is an audio-only WAV.

Is there a file size limit?

Only your device's memory. Long files take a few seconds to decode.

Try other audio tools

More free tools from My Panda Toolbox.

CUTAudio TrimmerCut audio to any range. XFAudio Crossfade GeneratorBlend two clips. NORMAudio NormalizerEven out loudness. FADEAudio Fade In/Out ToolAdd smooth fades.