nomus sends nothing.

The extension filters sound on your computer and has nowhere to send it. There is no nomus server, no analytics and no account. This page explains how you can check that yourself.

Last updated 23 September 2026.

The extension

• It hears only the tab you choose, only while you filter it. Chrome asks it to capture that tab's audio when you press the shortcut or click Filter this tab. It stops when you stop.

• Sound is processed in memory and played straight back. Nothing is recorded, saved or uploaded. The engine is WebAssembly with no imports, so it has no way to touch the network or your files.

• The browser blocks it from connecting anywhere. Its manifest setsconnect-src 'self', which lets it load only its own packaged files.

• It stores two settings on your computer: the mode and the strength you picked, in Chrome's extension storage. Nothing else is kept.

This website

No cookies, no analytics, no fonts or scripts from other companies. The demo runs the same engine in the page. Files you open on it are played from your own computer and never uploaded. The site's security policy (connect-src 'self') stops the page from sending anything to another server.

The site is hosted on Cloudflare, which sees ordinary request details like your IP address to deliver the pages, as any web host does. nomus does not collect, read or keep those logs.

Check it yourself

1. Open a video in Chrome and start filtering it with nomus.
2. Open chrome://extensions, find nomus, and click the offscreen.html link next to Inspect views. That opens DevTools for the part of the extension that handles the audio.
3. Pick the Network tab. While the tab plays, the list stays empty.

Changes

If this ever changes, this page will change first, with a new date at the top.