Explore the timing of the keyboard events your browser receives. Use consistent taps to compare a session, with the limits of browser measurements in view.
See how quickly this browser handles your keyboard events.
Press different keys at a steady pace. Each fresh key press adds one sample.
This measures the time from the browser event timestamp to this page’s event handler. It includes browser scheduling, and cannot measure total hardware, USB, Bluetooth or display latency. Charts and statistics retain the latest 300 samples.
Focus the test area and press and release keys at a comfortable pace. Compare the average, 95th percentile and recent samples. Each fresh keydown adds the delay between its browser timestamp and the page’s event handler.
JavaScript receives input after the keyboard, connection, operating system and browser have handled it. Event dispatch timing can reveal variation in this browser session, but the page has no independent timestamp for physical switch activation.
Keep the browser, workload, test key and connection consistent. Background work, timer precision, power settings and event coalescing can change results. True end-to-end latency testing needs an independent reference or specialist equipment.
About the test, your keyboard, and that one key that won’t light up.
More answersNo. It estimates the delay from a keyboard event’s browser timestamp to the page’s event handler. It cannot isolate the time from physically pressing a switch to a displayed response.
You can compare repeated browser sessions under similar conditions, but treat differences as observations rather than proof of hardware latency. The operating system and browser are part of the measurement.
From missed keys to double taps. Find the right Mac keyboard test for the job.
Explore event intervals and the rhythm of your keyboard input.
Hold one key. Check the delay before repeat and its steady rhythm.
Inspect key codes, modifiers and input-method composition events.
Meet every key. Check your MacBook or Magic Keyboard, one press at a time.
Tested in your browser. No accounts, no keystroke uploads, no fuss.
