Question 1

Is my audio uploaded anywhere?

Accepted Answer

No. Everything runs in your browser — the file stays on your device and is never sent to a server.

Question 2

Can it remove fan noise and hum?

Accepted Answer

Yes. The noise reduction learns the steady background sound — fans, hum, computer noise, room tone — and removes it. One-off sounds like a slamming door can't be removed automatically.

Question 3

Which mode should I pick?

Accepted Answer

Voice & podcast for speech that already sounds decent, Recording for meetings, interviews and phone audio that sounds thin or noisy, and Music when the dynamics should be preserved.

Question 4

What does mastering actually do?

Accepted Answer

We set the volume to −16 LUFS for speech and −14 LUFS for music, the level podcast platforms and streaming services expect, and protect the peaks so nothing distorts.

Question 5

Which file formats work?

Accepted Answer

MP3, WAV, M4A, AAC, FLAC, OGG and Opus. You download the result as full-quality WAV or 320 kbps MP3.

Question 6

Does it cost anything?

Accepted Answer

No, the tool is free and needs no account. There's no limit on how many files you can improve.

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