About

DeviceCheckHub is a small, independent collection of free tools for checking the hardware you use every day, starting with your microphone. Each tool is built to answer one question quickly: does this work, and if not, what should I do?

How the tests work

Every test runs in your web browser using the standard features that browsers provide for microphones, cameras, keyboards, controllers and displays. The page is a set of static files: once it has loaded, the test does its work on your device and sends nothing back to us.

What we care about

• Privacy: we never receive the audio, video or input you test.
• Plain answers: results are explained in everyday language, with step-by-step fixes for common problems.
• Speed: pages are lightweight and load fast on slow connections and older phones.
• Accuracy: instructions are checked against current versions of Windows, macOS, iOS, Android and the major browsers. If something is out of date, please tell us.

Get in touch

Found a bug, a wrong instruction or a device we should support? Visit the contact page.