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Is it the hardware, or you?

Find out in seconds. Every test runs in this browser tab, on the device you are holding, and nothing is sent anywhere.

Tests

19 tests

Keyboard Test

Find the key that stopped answering.

Typing Speed Test

Words per minute, measured on words you actually use.

Keystrokes Per Minute Test

The number data entry jobs actually ask for.

Click Speed Test

Clicks per second, over one second or a full minute.

Double Click Test

Prove that the mouse is clicking twice, not you.

Mouse Test

Every button, both wheel directions, live movement.

Key Rollover Test

Find out how many keys your board reports at once.

Gamepad Tester

Every button, both sticks, and the drift you suspected.

Microphone Test

Speak, watch the bar, know it works.

Webcam Test

See what the other side is about to see.

Dead Pixel Test

Find the dot that never changes colour.

Refresh Rate Test

The Hz your screen is running at, not the one on the box.

Touch Screen Test

Find the spot your screen stopped feeling.

Reaction Time Test

Wait for green. Click. Find out.

Spacebar Counter

Count the presses, not the repeats.

Mouse Polling Rate Test

Count the reports your browser usually folds away.

Speaker Test

Find the side that went quiet.

What is my screen resolution?

Everything this device says about itself.

Printer Test Page

One page that shows which colour stopped arriving.

Guides

Why a Keyboard Key Stops Working, and What Actually Fixes It A dead key is usually not a dead keyboard. The causes in order of likelihood, the settings that silently swallow keystrokes, and the repairs worth attempting. Why Mice Start Double Clicking, and How to Stop It Switch chatter explained: what wears out inside the button, why software cannot really fix it, which repairs work, and when the warranty is the better answer. DPI, Polling Rate and Sensitivity: What Mouse Specs Mean What DPI actually changes, why polling rate matters less than the box suggests, and the one number that decides how your aim feels: centimetres per 360. Dead Pixels: When a Screen Counts as Defective Dead against stuck pixels, the pixel fault classes manufacturers use, how many faults a warranty tolerates, and why the return window matters more than the count. How to Type Faster, and What Words Per Minute Really Measures Where the WPM figure comes from, why accuracy beats speed arithmetically, and the small number of habits that actually move the number.