Free background noise remover · 100% in your browser

Remove background noise from your video

Clean up hiss, hum and room noise from your audio. Pick a strength and get a cleaner track in seconds.

How to remove background noise from a video

  1. 1

    Import your video

    Drop your file. It stays on your device, nothing is uploaded.

  2. 2

    Pick a cleanup strength

    Choose light, medium or strong depending on how noisy the recording is.

  3. 3

    Get your MP4

    The picture is untouched, only the audio is cleaned, so processing is fast.

Clean audio. Now polish the rest.

Montaj takes it further: auto subtitles, silence removal and smart trims, all on-device, never uploaded.

Download Montaj free
Auto subtitles
Silence removal
100% on-device

Frequently asked questions

How do I remove background noise from a video for free?
Import your video, pick a cleanup strength and click “Remove background noise”. The audio is cleaned entirely in your browser, no account, no watermark, no fee.
Is my video uploaded to a server?
No. Noise removal runs entirely in your browser with ffmpeg.wasm. Nothing is sent anywhere.
Does this affect my video quality?
No. Only the audio track is re-encoded; the picture is copied as-is, so there's no quality loss on the video.
Which strength should I pick?
Start with Medium. Use Light for subtle room tone, or Strong for fans, AC or noisy environments. Very strong settings can slightly thin out voices.
What if my video has no audio track?
There's nothing to clean, so the tool tells you the video has no audio.
Is this a background noise remover or does it change the video?
It's a background noise remover for the audio track only, the picture is untouched. Use it any time you need to remove noise from a video without re-shooting it.

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Everything runs in your browser — nothing is sent to a server.