Remove Silence
Remove Silence cuts long pauses out of a recording in your browser, previewing every cut on the waveform, keeping a short natural pause and reporting the time saved.
At a glance
- Accepts
- MP3, M4A, AAC, WAV, FLAC, OGG and Opus audio, or the sound in a video file
- Outputs
- MP3 (192 kbps), WAV (16-bit) or M4A when the browser has an AAC encoder; the sample rate is kept where the format allows
- Where it runs
- Entirely in your browser, on your device
- What leaves your device
- Nothing - the file never leaves your device
- Limits
- Detects silence by level in 10 ms steps; doesn't remove background noise
- Account
- Not required - there is no sign-up
- Price
- Free, with no watermark and no usage cap
- Made by
- Visrut
- Last updated
- 13 October 2026
Tighten a lecture, voice note, interview or podcast by cutting the long pauses out of it. You choose how quiet counts as silence and how long a gap has to be, the stretches that will go are shaded on the waveform before anything is cut, and a short natural pause is left in each gap so speech doesn't run together.
How to use it
- Drop in a recording. Its levels are measured as it loads.
- Adjust the threshold, the minimum silence length and the pause to keep, and watch the shaded cuts and time saved update.
- Press Remove silence, listen, and download.
Honest limits
- Detection works on level only, so quiet breathing or room noise above the threshold is kept, and very soft speech under it would be cut. Check the shaded preview.
- Silence is measured in 10 ms steps, so cuts land within about 10 ms of the edge of a pause.
- Everything runs in your browser tab; the file is never uploaded.
- Long files are read and processed a piece at a time, so the length of the recording isn't the limit. The finished file is held in memory until you save it: about 86 MB per hour as MP3, and about 690 MB per hour of 48 kHz stereo as WAV, which a phone may not manage.
- MP3 and M4A are re-encoded at 192 kbps, which is a lossy step (like any edit to an MP3). WAV is uncompressed 16-bit.
- M4A is offered only when the browser has an AAC encoder (most desktop Chrome, Edge and Safari do; Firefox does not).
Frequently asked questions
How does it decide what is silence?
It measures the level of every 10 ms of audio (on whichever channel is loudest). Anything under the threshold for at least the minimum length counts as silence. The starting threshold is set about 12 dB above the file's own background level, which works for most voice recordings.
Will it cut words off?
Each silence is shortened rather than removed outright: the pause you choose is kept, half on each side, and every join gets a 4 ms fade so there are no clicks. If quiet word endings get clipped, lower the threshold or keep a longer pause.
Can I see what will be cut before I apply it?
Yes. The stretches that will go are shaded on the waveform as you change the settings, with the number of silences, the time removed and the new length shown below.
Does it remove background noise?
No. It only takes out the quiet gaps. A noisy room may need a higher threshold so the hum between sentences counts as silence.
Is my audio uploaded?
No. It is analysed and cut inside your browser tab.