Browser hardware guides

Each of these 83 guides answers one question a test result alone cannot: whether the thing you measured is actually a fault, and what to change next. They cover how to test a mouse, a keyboard, a webcam, a microphone, a monitor and a controller, plus the explainers behind the numbers — polling rate, keyboard ghosting, webcam resolution, stick drift, input lag and click speed.

Every guide follows the same order: define the symptom, collect a controlled baseline, read the result, respect what a browser cannot see, then decide. Each one links directly to the free online tests that collect the evidence, so you never have to leave the browser or install anything.