Remove Silence from Audio & Video
Drop a podcast, lecture, voice-over or video — silent gaps are found instantly, shown in red on the waveform and cut out. Runs in your browser: nothing is uploaded.
Free · No sign-upHow to use Remove Silence
- 1. Drop your file — MP3, WAV, M4A, MP4, MOV, WebM and more. It is read on your device; nothing is uploaded.
- 2. Check the waveform. Silent parts to remove are shown in red and the threshold is set automatically from your recording's background level.
- 3. Fine-tune the threshold, minimum silence and padding. The count, time saved and new length update live — press Preview result to hear it with the gaps skipped.
- 4. Save as MP3, WAV or M4A audio, or as an MP4 video with frame-accurate cuts that stay in sync.
Frequently asked questions
How does the tool decide what is silence?
It measures the loudness of your file every 10 milliseconds. Anything quieter than the threshold for longer than the minimum silence length is treated as a silent part. The Auto button sets the threshold a little above the background noise of your recording.
Will it cut off the start or end of words?
No, as long as you keep some padding. Padding leaves a little of each silence (0.15 s by default) before and after every sound, so breaths and soft consonants are not clipped and the result sounds natural.
Can I remove silence from a video?
Yes. Choose MP4 video and the picture and sound are cut together on exact frame boundaries so they stay in sync. You can also save just the audio as MP3, WAV or M4A, which is much faster.
Is my file uploaded to a server?
No. The analysis and the cutting run entirely in your browser with WebAssembly (FFmpeg). Your audio or video never leaves your device, and there is no account, watermark or time limit.
How long can the file be?
Files up to about an hour work well on a computer. Everything runs in your browser's memory, so very large videos can be slow or fail on phones. For long videos, saving audio only is fastest.
What is a good threshold for a podcast or voice-over?
Start with Auto. For a quiet room it is usually between -50 and -40 dB. If breaths or background noise are left in, raise it (towards -35 dB); if quiet words are being cut, lower it.