Privacy

Sound Test is a set of audio tools that run in your browser. This page explains exactly what that means for your data. The site's source code includes tests that fail if any of it stops being true.

What runs in your browser

The page, its stylesheet, its fonts and its scripts, all served from soundtest.net. There are no cookies, no tracking scripts and no ads, and your browser doesn't contact any other company's servers. We host the fonts ourselves instead of loading them from a font service, so visiting a page doesn't tell anyone else you were here.

Every sound the tools play is made on your device as it plays. No audio files are downloaded, and nothing you do with a tool is sent anywhere.

Your microphone

A tool that uses your microphone only asks for permission when you press its button. Audio from your microphone never leaves your device: it's never uploaded, never stored, and never sent anywhere. A recording only exists in the open tab, and it's gone the moment you leave or reload the page. You can take the permission back at any time from your browser's address bar.

What our host sees

The site is hosted by Cloudflare. Like any web host, Cloudflare receives every request your browser makes to this site, including your IP address, the address of the page you asked for, and your browser's name and version, and it keeps logs of those requests.

We look at the traffic statistics Cloudflare builds from those logs: how many requests the site gets, which pages people ask for, and roughly which countries they come from. Those statistics show the IP address for a sample of individual requests. We only use them to understand how the site is used, and we never combine them with any other information. How Cloudflare itself handles this data is explained in Cloudflare's privacy policy.

Search engines

The site is registered with Google Search Console, so we can see how it shows up in Google's search results. That's set up through the site's DNS records: nothing is added to the pages, and your browser doesn't contact Google when you visit.

Questions?

Email us at [email protected].

Last updated 19 September 2026.