Remove Silence
Cut long pauses out of recordings, or trim only the silence at the start and end.
Free · No upload · 100% on your device
Remove Silence
Choose video or audio files, or drop them here.
MP4, MOV, MKV, WebM, AVI and more · No size or length limit. Nothing is uploaded.
100% on your device
How to use Remove Silence
- Choose your audio files, or drop them on the page.
- Pick the settings in the side panel.
- Select “Remove silence”. The first use downloads the video engine once.
- Download the result. Your original file is left unchanged.
Private by design. Your files are processed in this browser tab and are never uploaded to KittySuite.
About Remove Silence
Removing every long pause tightens voice recordings; the threshold decides how quiet counts as silence. For videos only the silence at the start and end can be trimmed, because cutting pauses from the middle would put the sound out of sync with the picture.
Processing happens in this tab with FFmpeg compiled to WebAssembly; your recordings are never uploaded. The first video or audio tool you use downloads the 10 MB engine once and keeps it cached for next time. On phones, files are processed one at a time to stay within memory, and long recordings take a little longer. Keep the tab open until the download appears.
Remove Silence: frequently asked questions
How do I remove silence from a recording?
Choose the file and “All long pauses”, then set how quiet counts as silence and the shortest pause to remove.
Can I trim only the silence at the start and end?
Yes. Choose “Only at the start and end”.
Why can only the ends be trimmed in videos?
Cutting pauses from the middle would put the sound out of sync with the picture.
Which threshold should I choose?
−40 dB suits most voice recordings. Use −50 dB for very quiet rooms or −30 dB if background noise is counted as speech.