Keyboard Latency Test Online
Measure the input latency of your keyboard as detected by the browser. This test captures the delay between physical key presses and browser event processing, helping you understand your system's responsiveness. Note: this measures browser-level latency, not hardware-level latency.
Browser PrecisionLow-Medium
Measured via Event.timeStamp vs performance.now(). Browser-level latency only, not hardware latency.
Frequently Asked Questions
What does this keyboard latency test measure?
This test measures the time between when the browser receives a keyboard event (Event.timeStamp) and when it processes it (performance.now()). This represents browser event processing latency, not the full hardware-to-screen latency.
Why is my keyboard latency higher than expected?
Browser-level latency includes OS event queue delay, browser rendering pipeline overhead, and JavaScript execution time. Typical browser latency ranges from 4-16ms. Actual hardware latency requires specialized measurement tools.
How can I reduce keyboard input latency?
Close unnecessary browser tabs, disable browser extensions, use a wired keyboard instead of wireless, and ensure your system isn't under heavy CPU load. For gaming, consider a keyboard with a higher polling rate and a browser with hardware acceleration enabled.