Online Keyboard Test

This keyboard test uses your browser's keyboard events to check every key on a standard keyboard, one press at a time. Each key on the screen matches a physical key using its key code, not the printed letter, so the layout stays accurate even if your operating system uses a different keyboard language. Press any key and it lights up straight away; keep it held down and the counter at the top shows how many keys you have pressed at once.

That "keys held at once" number is the real point of this test. A keyboard with poor rollover cannot register certain key combinations when several are pressed together, a limitation known as ghosting. Try holding down a common gaming combination, such as W, A, and Space, or Shift and a few letter keys, and watch whether every key you are pressing actually lights up. If one stays gray while your finger is still on it, that key is not registering in that combination, which points to a rollover limit or a wiring issue in the keyboard.

Once a key has registered a press, it stays marked so you can see your full test progress at a glance, and the counter at the top tracks how many of the keys you have covered. Reset the test at any time to start over, for example after testing a different keyboard, and use the result to decide whether a keyboard needs cleaning, repair, or replacement before it becomes a problem during typing or gaming.