Privacy · don't trust, verify

Your music never leaves your device.

LevelAudio opens your files in the browser tab, measures and levels them on your own processor, and writes the results back to your disk. There is no upload, no server-side processing, no account and no analytics: we couldn't hear your music if we wanted to.

Your library is gigabytes. Uploading it would be silly.

  • Fast. No upload, no queue: a whole album levels in seconds.
  • Safe. Originals stay on your disk; results go to a separate normalized folder unless you ask otherwise.
  • Private. There is no server to send anything to.
  • Free. No servers means no server bills.

Check it yourself in two minutes

“We don't upload your files” is a promise every service makes. LevelAudio is built so you don't have to take it on faith:

  1. Open the app, then open your browser's DevTools and watch the Network tab. Level a folder: the app's own files come to you, and nothing leaves.
  2. The page's security policy only lets it talk to its own origin, which serves the app files. There is no upload endpoint to talk to.
  3. The FFmpeg engine for FLAC is served from the same origin too, downloaded only when a file needs it, and runs in the tab like everything else.

What is kept, and where

  • Your files and the results stay on your disk, in the folder you picked, or in the ZIP you download.
  • The language you chose is remembered by your browser, on your device.
  • No accounts, no tracking cookies, no analytics scripts.
  • Our host, Cloudflare, handles the technical data that every web request involves (such as your IP address) to deliver the pages. Donations go through Stripe; we never see your card details.