100% in your browser
Every test uses native browser APIs. Nothing you type, say or show on camera is uploaded, recorded or stored anywhere.
Test your hardware,
right in your browser.
Free online diagnostics for your keyboard, mouse, microphone, webcam, display and controller. Every check runs client-side, so nothing you press or say ever leaves this tab.
Keyboard TestREADY
Light up pressed keys on a virtual keyboard and find dead or stuck keys.
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Key Code ViewerREADY
Read event.key, code, keyCode and which for any key you press.
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Mouse TestREADY
Check left, right, middle clicks, scroll and double-click behaviour.
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Touchpad TestTPAD
Track pointer movement, clicks, two-finger scroll and pinch gestures live.
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Gamepad TestPAD
See live button presses and analog stick values for any controller.
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Microphone TestMIC
See a live input meter and waveform to confirm your mic is picking up sound.
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Webcam TestCAM
See a live camera preview with resolution and device details.
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Speaker TestSPKR
Play a test tone through left, right or both speakers and check the output device.
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No install, no account
There is nothing to download and no sign up. Open a test, use it, and close the tab when you are done.
Hardware or software?
If a device fails here but works elsewhere, the fault is likely the app. If it fails here too, it points to the hardware.