How to use it
- Choose the keyboard layout.
- Press real combinations such as W+A+Shift+Space at the same time.
- Check every detected key on the visual keyboard.
- Try different combinations to find the maximum simultaneous key count.
Ghosting / NKRO Test
Check how many simultaneous keys and real gaming combinations your keyboard reliably registers.
A better starting point
Isolate key problem
Is the problem a single key or a combination?
If one key only fails intermittently, a ghosting test is not the best first step. Isolate the key-specific issue first.
Currently held0
Max simultaneous0
Detected keys—
AssessmentReady
Press and hold multiple keys at the same time. Try the combinations you actually use in games.
The browser or operating system may intercept some special combinations; the result reflects the key events the browser receives.
Ready.
How to interpret the result
If some combinations work and others do not, the keyboard matrix or rollover limit may be involved. A high simultaneous-key count does not guarantee every combination will work.
Test limitations
The browser and operating system may intercept special shortcuts. This test does not directly inspect the keyboard's electrical matrix.
Privacy
The test runs in your browser. Supported history and report data in this version is stored locally in your browser using localStorage.
Frequently asked questions
What is ghosting?
Ghosting is when some simultaneously pressed keys are not detected or unexpected key events appear.
NKRO ne demek?
N-key rollover means many keys can be detected independently at the same time.
Is 6KRO bad?
No. Six simultaneous keys are enough for many uses; what matters is whether the combinations you actually use work reliably.
Important: Testarya results are based on input events observed by the browser. They should not be treated as definitive electronic diagnostics or a professional service report.