Is Normalize audio free? Is there a watermark?

Yes — Normalize audio is completely free, with no sign-up, no watermark, and no limit on how many files you process.

Do my files get uploaded to a server?

No. Normalize audio runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM (with audio) file never leaves your device and nothing is stored or seen by us.

What can I put in, and what do I get out?

Normalize audio accepts MP4, MOV, WebM (with audio) and gives you back a MP4 file.

Does Normalize audio change my original file?

No. It never touches your original — Normalize audio creates a brand-new MP4 file to download and leaves the source on your device untouched.

Free tools · Edit

Normalize audio

Level a video's audio to a consistent loudness — fixing clips that are too quiet in places and too loud in others — using broadcast loudness normalisation. Runs in your browser.

Runs entirely in your browser. Your file is never uploaded — no watermark, no account.

Drop a file or click to chooseMP4, MOV, WebM (with audio)

How to use Normalize audio

1
Choose your file. Drop a file into the tool, or click to select one. It stays on your device — nothing is uploaded.
2
Pick your settings. Adjust the options if you like, then press Run. The first run downloads a ~32 MB engine once; after that it's instant.
3
Download. Everything is processed right in your browser — download the finished file instantly, with no watermark.

Frequently asked questions

Is Normalize audio free? Is there a watermark?: Yes — Normalize audio is completely free, with no sign-up, no watermark, and no limit on how many files you process.
Do my files get uploaded to a server?: No. Normalize audio runs entirely in your browser with WebAssembly, so your MP4, MOV, WebM (with audio) file never leaves your device and nothing is stored or seen by us.
What can I put in, and what do I get out?: Normalize audio accepts MP4, MOV, WebM (with audio) and gives you back a MP4 file.
Does Normalize audio change my original file?: No. It never touches your original — Normalize audio creates a brand-new MP4 file to download and leaves the source on your device untouched.