About this tool

Online Keyboard Tester is a free online keyboard tester that helps you check whether your keys register correctly and investigate common keyboard input problems. Open the tool, select your layout, and press each key to see instant feedback on a visual keyboard.

Choose from seven layouts: full-size, TKL, 75%, 65%, 60%, laptop, and Mac. Check for unresponsive keys, identify potential stuck or chattering inputs, and test simultaneous key presses for N-key rollover and ghosting. The key event inspector shows detailed input information, while timestamped key press history can be exported as CSV or