Controller TestConnect your controller.
Know if everything works.

Your browser has a built-in Gamepad API that lets a web page read a connected controller's buttons and axes. This page polls it around 60 times per second and draws what it receives: pressed buttons light up, sticks move, and trigger meters fill from 0 to 100%.

While you play with the controller, the tester keeps track of:

• which buttons have registered at least once,
• the furthest each stick has travelled in every direction,
• the deepest each trigger has been pressed, and whether it reports in-between values,
• the stick's resting position when you run the drift test.

Everything happens on your device. No readings are uploaded, and there's no account or download.

1. USB: plug the controller in with a data cable (some charge-only cables won't work). It should be recognized immediately.
2. Bluetooth: put the controller in pairing mode and pair it in your computer's Bluetooth settings first. The browser can't pair devices itself.
3. Press a button. Browsers hide controllers from web pages until you press something while the page is open, so the status box stays on “No controller detected” until you do.

Using a specific controller? See the PS5 DualSense guide or the Xbox controller guide for model-specific tips.

Stick drift is when an analog stick reports movement even though nobody is touching it. In a game, it shows up as a camera that slowly pans on its own or a character that creeps forward. It's usually caused by wear or debris in the stick's sensors.

The drift test above asks you to let go of the controller, then samples both sticks for three seconds and reports how far their average resting position sits from dead center. Small offsets are normal; nearly every stick rests a little off zero. For a deeper explanation, use the dedicated stick drift test.

A dead zone is a small area around the center of a stick where games ignore input. It exists precisely because sticks rarely rest at a perfect zero. If a stick rests 3% off center and the game's dead zone is 8%, you'll never notice it.

The dashed circle in the drift test shows a dead zone you can resize (default 8%). It only changes the display; the raw numbers are always visible, so you can compare your stick against the dead zone your game uses. Drift becomes a real problem when the resting offset is larger than the game's dead zone.

• Press a button with this tab in focus. Clicking the page first, then pressing a controller button, fixes most “not detected” cases.
• Close Steam or other remapping tools. Steam Input, DS4Windows and similar tools can hide the real controller or present a virtual one with different buttons.
• Try a different cable or port. Charge-only USB cables carry no data.
• Re-pair over Bluetooth if the controller was last paired to a console.
• Reload the page after connecting, or try another browser. Detection is handled by the browser and operating system, not by this site.

The Gamepad API is available in current versions of Chrome, Edge, Firefox and Safari on desktop, and in most mobile browsers. What differs is how each browser maps buttons and whether vibration is exposed:

• Chrome and Edge map most Xbox and PlayStation controllers to the standard layout and support rumble for many of them.
• Firefox reads controllers reliably but generally doesn't expose vibration.
• Safari (macOS, iPhone, iPad) supports controllers that Apple's Game Controller framework recognizes, such as Xbox, PlayStation and Switch Pro controllers.