Device Test HubDevice Test Hub
Free browser-based tests for your webcam, microphone, speakers, keyboard, mouse, gamepad, MIDI, screen (dead pixels, refresh rate) and touch screen. Nothing to install, and nothing you do is sent anywhere.
Webcam TestCheck picture, resolution and frame rateMicrophone TestLevel meter, clipping, record and play backSpeaker & Headphone L/R TestLeft/right, phase and frequency sweepKeyboard TestJIS, US, UK, DE, FR layouts, rollover, chatterMouse TestButtons, wheel, double-click, polling rateGamepad TesterButtons, sticks, drift and vibrationMIDI Keyboard TestNotes, velocity and CC monitorDead Pixel TestFull-screen colors to spot bad pixelsRefresh Rate TestDisplay Hz, late frames and motionTouch Screen TestMulti-touch count, dead zones, pen pressure
Your device and browser
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Values as reported by your browser (not sent anywhere either).
When to use it
- Check your camera and mic before an online meeting or interview
- Check a new or used keyboard or mouse for dead keys, buttons or chatter
- See whether a controller stick drifts
- Check a new monitor or phone for dead pixels and its real refresh rate (such as 144 Hz)
- Make sure earphones or speakers are wired left and right correctly
FAQ
Do I need to install anything?
No. Just open the page in your browser. For the camera, mic and MIDI, the browser asks for permission when you start.
Is my video, audio or typing sent anywhere?
No. Every test runs only inside your browser.
Does it work on phones?
Camera, mic, speaker, touch, dead pixel and refresh rate tests work on phones. Use a computer or tablet with the device connected for keyboard, mouse, gamepad and MIDI.
Does an odd result mean my device is broken?
Not necessarily. OS or browser settings, other apps and cables are common causes. See "If it does not work" on each test.