How the controller vibration test works
Most controllers have two rumble motors, one in each grip. Each motor spins an off-centre weight: the strong motor has a heavy weight for a deep rumble, the weak motor a light one for a quick, sharp buzz. Games mix the two to make explosions, engine noise or footsteps. This vibration test lets you run them separately so you can tell which one is weak or dead.
The page uses the browser's Gamepad haptics interface. When you press a button it asks the browser to play a dual-rumble effect with the strength you set, from 0 (off) to 1 (full). Xbox One and Series controllers also have a small motor behind each trigger; when the browser reports trigger-rumble support, the trigger buttons become active.
How to test controller vibration step by step
- Connect the controller and press any button so the page detects it.
- Hold the controller normally and press Strong motor. You should feel a deep rumble, mostly in the left grip on most controllers.
- Press Weak motor. You should feel a lighter, higher buzz, mostly in the right grip.
- Press Ramp up. The rumble should grow smoothly from faint to full with no gap at the start.
- Lower the strength sliders to 0.2 and play both motors again. A healthy motor still runs at low strength.
- On an Xbox controller, press Left trigger and Right trigger with a finger resting on each trigger.
What the vibration test results mean
| What you feel | Likely cause |
|---|---|
| Nothing from either motor, buttons greyed out | The browser does not offer vibration for this controller or connection. Try Chrome or Edge, or a USB cable. |
| Nothing, buttons active | Vibration turned off in the controller or system settings, an app holding the controller, or both motors disconnected. |
| One motor works, the other is silent | A worn motor or a loose motor wire on that side. |
| Motor starts only above 0.5 | Worn motor brushes; common on older controllers. |
| Rattling or grinding | Loose weight or a cable touching the motor inside the shell. |
Vibration support by controller and browser
- Xbox One and Xbox Series controllers: both rumble motors in Chrome and Edge; trigger rumble in Chrome and Edge on Windows. See the Xbox controller tester.
- PS5 DualSense: the rumble works in Chrome and Edge on many setups; detailed haptics and adaptive triggers are not available to web pages. See the PS5 controller tester.
- PS4 DualShock 4: both motors in Chrome and Edge over USB and Bluetooth on most systems.
- Switch Pro Controller: the HD rumble is driven like a classic rumble in Chrome and Edge.
- Firefox and Safari: vibration support is limited or missing; the page tells you what the browser reports.
Generic PC gamepads vary: some report vibration and some have no motors at all. If the effects line says none, the browser does not see any motors on that device.
Before you open the controller
Vibration motors are among the easiest parts to replace, but check the simple things first: turn vibration on in Windows, Steam or console settings, update the controller firmware, and try another cable or Bluetooth instead of USB. Then run the test once more. If the buttons and sticks also act up, run the full gamepad tester to see the whole picture.