Skip to main content
I/O Checkup
System ready

Tap Accuracy Test

Tap moving targets to estimate touch offset, calibration drift, and screen edge accuracy.

Tap the highlighted target
TapTarget 1 / continuous loop
Active Points0
Max Multi-Touch0
Last InputNone
PressureUnavailable
Avg OffsetUnavailable
Run NotesUse real touchscreen hardware for the most meaningful result. Mouse input is only a fallback.

Local history

Save a result to keep it in this browser. History holds your five most recent saved results for this test.

No saved results yet.

How to use this test

What to do

Tap the center of each highlighted target without dragging. Use the same hand and hold position between runs.

What to look for

The mean offset describes your recorded tap relative to the on-screen target. Finger placement can change the result.

Contact positions, identifiers, and pressure come from Pointer Events where available. Pressure may be a default value on unsupported hardware. Browser gestures and palm rejection can interrupt contact tracking.