About Device Test Toolbox

Device Test Toolbox brings thirteen device checks into one page: dead pixel and screen, webcam, microphone, keyboard, speakers, refresh rate, mouse, internet speed, system info, touchscreen, gamepad, display gradients and audio latency. Each test is designed to show what a pass looks like and what to do if it fails — for example, before a call, after setting up a new device, or while a returns or warranty window is still open.

The tests run in your browser on your own device. As set out in the Privacy Policy, camera, microphone and video never leave your device, and nothing is recorded or uploaded by this site.

Contact

The most helpful messages include: the test you ran, your device and browser, what you expected to happen, and what happened instead. Please do not send camera recordings, microphone recordings, passwords or other sensitive personal information.

Corrections and feedback

If a test gives a misleading result on a particular device or browser, or a guide on this page is out of date, a short description of the device, browser and result is enough to investigate it.