Will it cut quiet speech along with the pauses?

Speech mode runs a small speech detector on your device, so breaths, clicks and room tone are cut while quiet speech is kept. Loudness mode cuts anything below a threshold.

What format is the trimmed audio?

WAV or MP3. WAV is ready right away; MP3 first loads a one-time encoder of about 30 MB. The tool shows how many seconds were removed and the new length.

Is there a file size limit?

It depends on your device, because audio is processed in browser memory: up to about 2 GB on most computers and 400 MB on a phone. Nothing is uploaded.

Yes. Every tool is free to use, with no account and no credit card. The work runs on your device rather than on our servers, which is what keeps it free to run.

Are my files uploaded?

No. Your files are opened and processed inside your browser and are not sent to LibraTool. Some tools first download a processing engine or AI model to your browser; that download contains no data of yours.

Does it work on mobile?

Yes. It runs in current mobile browsers on iOS and Android, with nothing to install. Very large files can be slow or run out of memory on a phone, so use a computer for those.

🤫

Free Audio Silence Remover

Automatically detect and cut silent gaps from your audio with an adjustable threshold — entirely in your browser.

File size depends on your deviceFiles stay privateNo login requiredFree forever100% localAdjustable threshold

Automatically trim silent stretches from a recording using a loudness threshold and minimum-gap length. Great for tightening podcasts and voice memos.

Drop a file here, or click to browse

Audio · processed on your device

or press Ctrl+V to paste from your clipboard

Browse files

Your files never leave your device. All processing happens locally in your browser.

🔒 Your audio is analysed and trimmed entirely in your browser — nothing is uploaded.

Common uses

Podcast Silence RemoverTighten a podcast by cutting long pauses.
Remove Dead AirCut empty dead-air sections from a recording.
Trim a Voice MemoShorten a rambling voice memo automatically.
Shorten a LectureCompress a lecture by removing silent gaps.
Clean Up an InterviewRemove awkward silences from an interview.
Tighten an AudiobookTrim overlong pauses from a narration.

How It Works

Automatically detect and cut out silent stretches from your audio using an adjustable loudness threshold and minimum-gap length. Great for tightening podcasts, voice memos and lecture recordings — processed entirely in your browser and exported as WAV.

1
Add your audio
Drag in a recording. It is decoded on your device.
2
Tune the threshold
Set how quiet counts as silence and the shortest gap to remove.
3
Process
Silent ranges are detected and the kept audio is stitched back together.
4
Download
See how much was removed, then save the trimmed WAV.

Your audio is analysed and trimmed entirely on your device — nothing is uploaded.

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Remove background noise, wind, traffic, hiss and hum from voice recordings with an AI model that runs on your device. Nothing is uploaded and no account is needed.

Try it53 MB one-time download

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Video Trimmer

Cut a clip from any video by dragging start and end handles. Fast lossless trimming or frame-precise mode. Runs entirely in your browser.