How it works
- Pick a file. It stays on your computer: the page reads it with your browser’s own decoder, nothing is uploaded.
- Check the shaded parts. The waveform shows how loud each moment is. Orange shading is what will be cut. The two orange lines are the silence threshold.
- Tune three settings. Silence below is how quiet counts as silence (it starts at a guess based on your file’s background noise). Gaps longer than stops it from cutting the tiny pauses between words. Leave a pause of keeps a little breathing room so the edit doesn’t sound rushed.
- Preview, then export. Press play: the preview jumps over the cuts so you hear the result before you export it. Export gives you an MP4 (or WebM in browsers that can’t make MP4), or a WAV for audio files.
Good settings to start with
| Recording | Gaps longer than | Leave a pause of |
|---|---|---|
| Screen recording or tutorial | 0.5 s | 0.2 s |
| Talking-head video for social | 0.3 s | 0.1 s |
| Podcast or interview | 1.0 s | 0.4 s |
| Lecture or slow walkthrough | 1.5 s | 0.5 s |
If it cuts into the start or end of words, lower Silence below (move it left) a few dB. If it leaves obvious dead air, raise it. A noisy room (fans, air con) needs a higher threshold than a quiet one, which is why the page starts from your file’s own noise floor.
What it won’t do
- It cuts silence, not mistakes. A loudness check can’t tell an “um” from a word, or a restart from the take you kept. For that you need the words, which is what a transcript-based editor gives you.
- Music or background sound counts as sound. If a track plays under your voice, nothing will look quiet. Cut silences before you add music.
- Very long files take a while. Export re-encodes the video on your computer, so a long recording takes a while. Keep the tab open until it finishes.
Other ways to remove silence
ffmpeg is free and runs anywhere. Open “Cut list and ffmpeg command” above and you get a command with the exact cuts this page found, ready to paste into Terminal. ffmpeg also has its own silenceremove filter, but it’s fiddly to tune and works on audio only.
Audacity has a Truncate Silence effect for audio. It’s good for podcasts but doesn’t touch video.
For a longer walk-through of the free and paid options on a Mac, read how to remove silence from a video.
FAQ
Is this silence remover really free?
Yes. There’s no sign-up, no watermark and no length limit. It runs in your browser, so it costs us nothing to run, and your file never leaves your computer.
Is my video uploaded anywhere?
No. The page reads and exports the file with your browser’s built-in video tools (WebCodecs). Once a file is open, you could switch off your Wi-Fi and the export would still finish.
Which browsers can export the video?
Chrome and Edge export MP4 on Mac and Windows. Other browsers export where they support WebCodecs encoding; if yours can’t, download the cut list or copy the ffmpeg command instead.
How long a pause should I leave?
For screen recordings and tutorials, about 0.2 seconds between sentences sounds natural. Social videos can go tighter (0.1 s); podcasts and interviews sound better with 0.3 to 0.5 s.
Can it remove “um” and “uh” too?
No. Filler words are sounds, not silence, so a loudness check can’t find them. You need a transcript-based editor for that, such as the Blazing Video Mac app, which cuts them in one click.