Output
Held keys; transitions; repeat intervals
UserBenchmark / All Tools / Keyboard Double Click Test
Keyboard
Keyboard Double Click Test
Inspect repeated key presses and intervals for possible switch chatter.
Free to useNo downloadNo sign-up
Keyboard Double Click Test · At a glance
Quick answer: Inspect repeated key presses and intervals for possible switch chatter. Repeated key-down events while a key remains held are normal OS repeat.
Keyboard Double Click Test
The test loads when you open it. Device access is requested only after you choose to start.
Detailed guide
How to use this tool
- Make single intentional presses and release fully.
- Inspect whether a release and new press appear unexpectedly close together.
Input
Focused physical key presses
Browser requirement
KeyboardEvent.code; keydown and keyup
Processing
Runs on your device; no tool-result upload
How it works and what the result means
The tester records browser key-down and key-up events, tracks held keys, and separates operating-system repeats from fresh presses. Short intervals are clues to investigate, not proof of a defective switch.
Reading the result
Repeated key-down events while a key remains held are normal OS repeat. Separate press-release-press sequences are the relevant evidence for possible chatter.
What to check next
Keep the log visible and compare the same key in another application. Avoid testing by holding the key down.
System shortcuts and some special keys are intercepted before a web page receives them. USB polling frequency, analog actuation distance and physical rapid-trigger settings cannot be read from keyboard events.
Frequently asked questions
Is repeated text always switch chatter?
No. Held-key repeat, software macros and input methods can also repeat text. Inspect event ordering before attributing repetition to the physical switch.
How do I start the Keyboard Double Click Test?
Click the test area to focus it, then press and release the keys you want to inspect. Try simultaneous combinations for a ghosting check.
Does this tool require a download or an account?
No. Open the interactive tool above in a modern browser. The instructions and explanations are available even with JavaScript disabled; running a test needs JavaScript.
Why can two attempts give different results?
Power settings, background tasks, browser scheduling, operating-system input processing and device settings affect measurements. Compare repeated attempts with identical settings rather than the single highest score.