Is my audio kept private?

Yes. Zolkit's Audio Enhancer processes all audio in your browser using WebAssembly. Your files are never uploaded to any server and never leave your device. The audio engine (~30 MB) is downloaded once and cached locally for future use.

What audio formats are supported?

You can upload MP3, WAV, M4A (AAC), OGG, FLAC, and raw AAC files. Output is always WAV (uncompressed), which preserves maximum quality.

Which mode should I use?

Use Light for recordings that are mostly clean but have a faint hiss or hum. Use Studio for podcasts, interviews, and voice-overs — it reduces noise, controls dynamics, and lifts vocal clarity. Use Rescue for recordings made outdoors, in noisy rooms, or with low-quality microphones.

How is this different from Adobe Podcast?

Adobe Podcast (Enhance Speech) uploads your file to Adobe's servers and requires an Adobe account. Zolkit's Audio Enhancer runs entirely in your browser with no upload, no account, and no cost. Processing uses FFmpeg's professional audio filters rather than a neural network.

Is there a file size limit?

There is no hard limit set by Zolkit — the practical limit is your device's available memory. Files up to 200 MB process smoothly on most modern computers. Very large files (500 MB+) may be slow or cause out-of-memory errors on low-RAM devices.

Why does the first run take longer?

On the first use, the browser downloads the FFmpeg WebAssembly engine (~30 MB). This takes 10–30 seconds depending on your connection. The engine is cached and subsequent uses start instantly.

Audio Enhancer

Remove noise, echo, and wind from recordings — browser-only, no file upload, completely private.

Drop an audio file here

or click to browse

Supports MP3, WAV, M4A, OGG, FLAC, AAC · Max 500 MB

Enhancement Mode

Browse Use Cases

Podcast Voice Enhancer Interview & Field Recording Enhancer Lecture & Meeting Audio Enhancer

Free Online Audio Noise Remover — No Upload Required

Zolkit's Audio Enhancer runs FFmpeg's professional audio filters directly in your browser using WebAssembly. Upload any audio file — MP3, WAV, M4A, OGG, FLAC, or AAC — and get clean, broadcast-ready sound in seconds. All processing happens locally on your device; your audio is never sent to any server. No subscription, no account, no Adobe Podcast paywall.

100% Private

Audio never leaves your device. Processing runs entirely in the browser via WebAssembly — no uploads, ever.

FFmpeg-Powered

Uses the same audio filters trusted by broadcasters: afftdn FFT denoising and anlmdn spectral cleanup.

Three Enhancement Modes

Light, Studio, and Rescue modes cover everything from minor hiss removal to heavy outdoor noise.

Fast Local Processing

WASM runs at near-native speed. A 5-minute recording typically processes in under 15 seconds.

Free, No Account

No subscription or sign-up required. Zolkit's Audio Enhancer is free to use with no limits.

Voice Boosted

Studio mode applies dynamic compression to lift vocal presence and even out quiet and loud passages.

How to Remove Background Noise from Audio

1
Upload your audio file — drag it onto the page or click to browse. Supports MP3, WAV, M4A, OGG, FLAC, and AAC.
2
Choose an enhancement mode: Light for minor noise, Studio for voice and podcasts, or Rescue for heavily noisy recordings.
3
Click Enhance Audio. Preview the result with the built-in player, then download the cleaned WAV file.