Teste de rastro do mouse — Verifique suavidade, falhas e drift
Segure o botão esquerdo e desenhe à mão livre. O traço evidencia falhas do sensor, encaixe de ângulo e deriva.
Clique e arraste no canvas para começar
Tente círculos, diagonais e movimentos rápidos de ida e volta
What is a Mouse Trail Test?
A trail test renders your cursor's path as a continuous line on a canvas. Because the eye is excellent at spotting irregularity in curves, this is the fastest way to see issues that statistics tend to hide: micro-stutter, skipped frames, sudden direction snaps, and drift while idle.
The test captures Pointer Events from the canvas and connects each consecutive (x, y) sample with a line segment. Smooth, continuous curves with no gaps mean the sensor, polling, and OS event delivery are all healthy. Visible gaps, jitter, or auto-straightened diagonals point to specific problems described below.
What the Trail Reveals
Polling rate: 125 Hz produces visibly polygonal curves; 500 Hz looks smooth; 1000 Hz+ is essentially analog. Draw a slow circle and look for flat segments.
Sensor skipping: Move very fast in a straight line. Gaps or sudden hops in the trail indicate the sensor missed frames — it has been pushed past its IPS limit, or its DPI is too high for its tracking ceiling.
Angle snapping (prediction): Draw a slow diagonal. If it snaps perfectly straight despite minor hand wobble, the firmware is correcting your input. Most premium gaming mice ship this off; check driver settings.
Static drift: Stop moving the mouse, sit your hand still, and watch the cursor — any continuing trail without input is sensor drift, usually from a dirty lens or a problematic surface.
How to Use This Test
Circles at varied speeds: Slow circles expose polling rate; fast circles expose IPS limits.
Diagonals corner-to-corner: A perfectly straight diagonal under a wobbly hand reveals angle snapping.
Fast back-and-forth: Whips the sensor at maximum velocity. Gaps mean it can't keep up.
Idle the cursor: Place the mouse down and don't touch it for 10 seconds. Any drawn pixels mean drift.
How to Improve Trail Quality
Set polling rate to 1000 Hz (or higher if supported) in your mouse driver — the single biggest visual improvement.
Disable Angle Snapping / Prediction / Mouse Smoothing in driver and OS settings to get a true 1:1 trail.
Clean the sensor lens with a microfiber cloth; replace worn-out mouse skates that drag.
Use a non-reflective, consistent mousepad. Glossy desks confuse optical sensors and produce drift.
Perguntas frequentes
Jagged trails usually mean a low polling rate. Set your mouse to 500 Hz or 1000 Hz in driver software. A 60 Hz display also caps the visible smoothness no matter how high the polling rate is.
This is static drift. Causes include a dirty sensor lens, a reflective or worn mousepad, or a failing sensor. Clean the lens with a microfiber cloth and try a different surface; if the drift persists the sensor itself is degrading.
That's angle snapping (also called prediction) — firmware-side smoothing that snaps near-axis movement to the axis. Disable Angle Snapping or Prediction in your mouse driver to get truthful tracking.
It can indicate the sensor's IPS (inches per second) ceiling has been exceeded. Premium gaming mice (PixArt PMW3950, Razer Focus Pro 30K) sustain 650+ IPS; budget sensors top out at 100–200 IPS. Browser event coalescing can also cause this — see /polling-rate-test.