Test every touch point your browser receives

Put fingers on the pad to draw separate paths. Watch contact IDs, simultaneous touches and release or cancel events.

Touch and move inside the pad

Ready. Nothing is uploaded.

Event trace

Recent events appear here. Export keeps the full capture until the capture limit is reached.

What can a touch contact tell me?

Every contact has its own ID and path. The maximum is the largest simultaneous touch set seen during this capture. Pressure is shown as a reported value only; an unchanging default is not proof of a pressure-sensitive screen.

What this browser can measure

A mouse can preview a path but is labelled mouse, not a touch contact. Pointer cancellation ends that contact. Browser limits can hide device capabilities; this does not inspect the screen electrically. See the event and timing rules.

Try the related task

Mouse test: Press each mouse button and see down, up and repeat events immediately, with honest limits on hardware diagnosis.
Gamepad test: Connect a controller and inspect every button, trigger and stick value live, including drift and browser-support limits.
Keyboard test: Press single keys or combinations to see down, up, repeat and rollover events live, with honest browser limits.