Focused Mouse and Wheel Tester

How to use Focused Mouse and Wheel Tester

Observe pointer movement, button transitions and wheel values this browser actually delivers to a confined panel. The report keeps pixel, line and page wheel units distinct instead of inventing a physical distance or device polling-rate claim.

1. Run and explicitly arm/focus the test surface.
2. Move, press buttons or scroll within it; ordinary scrolling and Tab/Escape exit remain available.
3. Review bounded event evidence and clear or download it explicitly.

Good to know

• Only events on the focused, explicitly armed local surface are observed. There is no global pointer hook or pointer capture outside the surface. Blur disarms; Tab/Escape are not prevented.
• Latest 100 retained records and at most 10,000 observations per session. Pointermove samples are coalesced; the panel does not promise complete event capture, polling rate, latency measurement or hardware diagnosis.
• Coordinates are approximate CSS pixels relative to the current area. Wheel deltaMode values are preserved as pixels/lines/pages; no cross-mode physical distance normalization or acceleration correction is inferred. Wheel/context-menu defaults remain available.
• No gesture recording outside this area, permission request, persistence or network transfer occurs. Reset/new Run/page exit cancels pending frames and removes handlers; snapshots may reveal deliberate local interaction.
• Processing is local. Output is limited to 1,000,000 text characters unless a stricter file limit is stated.