Move your mouse here — the path is drawn as you go
- Distance
- — px
- Speed
- — px/s
- Peak
- — px/s
- Average
- — px/s
- Smoothness
- — %
- Direction changes
- —
- Pointer events/s
- —
Move your mouse in the tracking area and the cursor path is drawn as you go, coloured from slow to fast. Live readouts show distance travelled, current and peak speed, path smoothness and direction changes — a quick way to spot jitter, skipping or a sensor that loses track.
Move your mouse here — the path is drawn as you go
Slow lines that wobble or zig-zag point to sensor jitter, a dirty lens or a bad surface. Compare on a different mouse pad to rule the surface out.
A line that breaks or jumps during fast flicks means the sensor lost tracking — common when the mouse exceeds its rated speed or lifts off the pad.
See how far and how fast you actually move when flicking or tracking, and whether your movements are smooth or corrected in small steps.
Run the same slow and fast patterns on two surfaces and compare smoothness and gaps. Glass and glossy desks often cause tracking problems.
Move the mouse slowly across the tracking area. A healthy sensor draws one continuous, smooth line with no gaps or jumps.
Make fast flicks and wide circles. Watch the colour shift towards red as speed rises and check that the path never breaks or teleports.
Draw slow straight lines and compare the Smoothness score: wobble or jitter lowers it, a steady hand on a good mouse keeps it high.
Turn on Fade trail to see only recent movement, or Show samples to see each pointer event. Press Clear to start again.
It records and draws the path your cursor takes, so you can see tracking quality instead of guessing. This one also measures distance, speed, peak speed, smoothness and direction changes, all in the browser.
Draw slow, straight lines and small circles. A good sensor draws clean lines; jitter shows as wobble, zig-zags or a low Smoothness score. Clean the sensor and try another surface before blaming the mouse.
Gaps during fast moves usually mean the sensor lost tracking — the speed went past what it can follow, the mouse lifted, or the surface is too reflective. Gaps when moving slowly can mean a failing sensor or a wireless signal problem.
No. Distance and speed are in screen pixels, which depend on your DPI, pointer speed and display scaling. To convert movement to physical units, measure your DPI with the DPI test first.
No. It is how many movement events the browser delivers per second, which is capped by the browser and display. Use the mouse polling rate test for a closer estimate of your mouse's report rate.
No. The tracker only sees movement inside the tracking area while this page is open, and nothing is recorded or uploaded.