Three clean attempts
No early left-button release reached the browser during this repeated sample.
3 ATTEMPTS · PRIVATE · NO DOWNLOAD
Mouse Drag Test: Check Click-and-Drag Stability
Arm each attempt, hold the left mouse button, and keep moving for three seconds. Three repeated runs help separate one early hand release from a recurring dropped-drag pattern.
Three repeat attempts Early release visible Path stays local Updated Aug 29, 2026
CLEAN ATTEMPTS0/3
Three attempts required
THE DRAG TEST
Hold, move, release—then repeat
Each attempt requires three seconds and 300 pixels of movement. The browser must keep the left button held until you deliberately release it.
Arm the test below. Then press and hold the physical left mouse button inside this panel while moving continuously.
ATTEMPT 1/3HELD TIME 0.0sTRAVEL 0px
READ THE RESULT
A repeated early release matters more than one miss
The page records the release event that reached this browser. It cannot see whether that release came from switch bounce, your hand, the operating system, a driver, lost focus, or another input layer.
One interruption
Repeat deliberately. One early release can still be an accidental hand movement or focus change.
Recurring interruption
Compare another browser, port, wireless mode, or computer before replacing hardware.
THE METHOD
How to make the three attempts comparable
Use the same grip, pace, and surface each time. Change conditions only after the first three-run sample.
Arm before holding
Arm one attempt, then press the physical left button inside the panel. A click made before arming does not start a run.
Move continuously
Keep the button held for three seconds and move at least 300 pixels. Release only after both progress bars are full.
Repeat three times
Three attempts reveal whether an early release repeats. Then compare one different browser, port, or computer if needed.
TROUBLESHOOT
If the drag ends early
Repeat without changing anything
First rule out an early finger release or leaving the panel.
Try another application
Drag a file or selection elsewhere and check whether the same release occurs.
Change one connection condition
Compare another USB port, wireless receiver position, cable, or computer.
Check mouse software
Review remapping, debounce, macros, firmware, and profiles before blaming the switch.
QUESTIONS
Mouse drag test FAQ
How do I run the mouse drag test?+
Arm an attempt, press and hold the left mouse button inside the test area, and keep moving until both the three-second and 300-pixel targets are complete. Release only after the page says the target is reached, then repeat for three attempts.
What does a dropped drag look like in this test?+
If the browser receives a left-button release before both targets are complete, the current attempt is marked interrupted. That can match a dropped drag, but releasing early by hand, leaving the tab, or losing browser focus can create the same result.
Does one interrupted attempt mean my mouse switch is broken?+
No. Repeat the test three times and compare another browser, USB port, wireless mode, or computer. A recurring early release under the same deliberate motion is more useful evidence than one interruption.
Why does the mouse drag test require movement and time?+
A click held without movement does not reproduce a real drag very well. Requiring both three seconds and 300 pixels creates a deliberate, repeatable action while keeping the result simple enough to compare.
Can I use a trackpad for this drag test?+
A trackpad may expose a held primary-button drag, but tapping and gesture behavior differs from a physical mouse switch. Use a physical mouse when you are diagnosing a mouse-button problem.
Is my drag path recorded or uploaded?+
No. The temporary path, timing, distance, and attempt results stay in this browser tab. They reset when you reset the test or close the page.