How the click speed test works
Choose a test length and click or tap the large area as fast as you can. The countdown begins with your first click. When it reaches zero, your score is shown in clicks per second (CPS), and your best result is kept for as long as the page stays open.
Getting a fair result
Use a flat surface and a relaxed grip, and rest between attempts: speed falls quickly as the hand tires. Clicks are counted when the button is pressed, so both mouse buttons and touch-screen taps work.