Example
If W and A are received for a W + A + Space target, Space is marked as not currently detected. You must check that all three were physically pressed.
KEYBOARD LABKeyboard tools
Keyboard Ghosting Test
Hold a target key combination and compare which keys the browser receives.
Test workspace
Select a target combination, then press and hold all its keys together.
Ready. Select Start.
Select Start, then press keys in this area.
Input is captured only in the test area. Esc, Tab or moving focus to another field or window ends the test. A computer with a physical keyboard is recommended.
| Key | Press | Auto-repeat | Consecutive pairs | Shortest interval |
|---|
Recent events · up to 80
Statistics use up to 1,000 recent samples. Input is processed in this tab and is not saved to a server or browser storage. A result file is created only when you choose to save it.
How to use and read the results
- Select a combination such as W + A + Space.
- Start and hold all the target keys.
- Review missing targets, peak simultaneous input and successful full-combination detections.
How it works
Maintains the set of keys reported by keydown and keyup and compares it with the target set. Results apply to the tested combination.
References: MDN · Keyboard events