About DeviceTest

DeviceTest is a set of free browser tests for the hardware people actually use: mice, keyboards, controllers, microphones, cameras, speakers and screens. Every test runs locally in your browser — there is no account, no installer, and nothing you press, move, say or show is uploaded anywhere.

Why a browser is a good place to test hardware

Browsers sit on top of the same input and media layers as ordinary applications. A mouse button that never fires an event, a key that stops registering, a switch that sends two clicks from one press, a stick that drifts at rest, a microphone that never delivers audio, or a screen with a dead pixel — all of it is visible from a web page, with no driver and no admin rights. That makes these tests useful when you are diagnosing a problem on a machine you do not control, checking a second-hand purchase, or gathering evidence before a warranty claim.

What the tests deliberately do not claim

A browser cannot see raw sensor data, so polling rate and refresh rate are reported as what the browser received, not as lab measurements — each page says so. DPI is an estimate from a measured drag, accurate when pointer acceleration is off. Game sensitivity conversion only covers titles whose rotation constant is publicly documented; games with nonlinear sensitivity curves are left out rather than approximated, because a slightly wrong conversion is worse than none.

Privacy, in one paragraph

Key presses, mouse movement, microphone audio, camera video, recordings and snapshots are processed in your browser and stay there. We do not run accounts, do not store inputs, and have no server that receives them. The site uses privacy-respecting analytics to count page views and ads to pay for hosting — see the privacy policy for the details.

Corrections welcome

Hardware behaviour varies, and so do browser quirks. If a test disagrees with your vendor's tool in a way you can reproduce, tell us — the contact page explains what to include.