Background cleanup
Free Online Noise Reducer
Reduce steady background noise such as fan hum, air conditioner hiss, and light room noise in speech and simple recordings. The denoise pass runs locally in the browser with FFmpeg.
Useful for interviews, voice notes, and client speech drafts that should stay on your device.
Uses FFmpeg frequency-domain denoise processing designed for steady background noise reduction.
A practical way to clean rough speech and reference audio without sending private files anywhere.
Drag & drop audio here, or click to upload
Supports MP3, WAV, M4A, FLAC, OGG, AAC, and more
How to use the Noise Reducer online
- 1.Upload an audio file and let the browser read its duration and sample rate.
- 2.Choose how much steady background noise to reduce, then compare the cleaned result with the original preview.
- 3.Choose MP3 or WAV export, process the file in the browser, preview the result, and download it.
Why use this Noise Reducer?
Helpful for speech cleanup
This is useful when you need a faster cleanup pass for voice notes, interviews, or draft narration files.
Private browser workflow
FFmpeg runs locally on your device, so source files stay off external servers during processing.
Flexible output
Export MP3 for quick sharing or WAV if you want to keep editing the result afterward.
Common use cases
- •Clean low-level fan noise from a spoken voice memo.
- •Reduce room hiss in a client review narration export.
- •Tidy reference interviews before trimming or transcription work.
- •Prepare a rough audio file for sharing when full restoration is unnecessary.
Tips for better results
- •Start light. Moderate denoise often sounds more natural than maximum reduction.
- •This works best on steady noises, not sudden clicks, keyboard hits, or passing traffic.
- •You can export WAV if you want to follow the cleanup with more restoration later.
Noise Reducer FAQ
Will this remove keyboard clicks or passing traffic?
Not reliably. It works best on steady background noise rather than short, changing noises.
Is my audio uploaded to a server?
No. The processing happens in your browser, so the source file stays on your device.
Which formats can I upload?
Most common browser-decodable formats are supported, including MP3, WAV, M4A, FLAC, OGG, and many AAC-based files.
When should I export WAV instead of MP3?
Choose WAV if you plan to keep editing or chain more processing afterward. MP3 is better for quick sharing and review.