Focused tests for every important input.
Start with the symptom you notice, or run the complete controller tester. Each tool uses the values exposed by your operating system and browser—privately, without a download.
What do you want to check?
For buying or repair decisions, test over the same connection you plan to use and repeat any suspicious result.
Analog Stick Drift Test
Check controller stick drift, center offset, and idle noise in your browser. Get practical deadzone guidance without installing software.
Open free test → Analog stick tuningController Deadzone Test
Measure analog stick center movement and choose a sensible controller deadzone with live browser-based readings and clear guidance.
Open free test → Range and shape diagnosticsAnalog Stick Circularity and Range Test
Visualize analog stick range, corners, symmetry, and circularity. Check whether your controller reaches its expected movement envelope.
Open free test → Button input diagnosticsController Button Test
Press every browser-reported controller button and verify live response, analog values, stuck inputs, and missed or repeated presses.
Open free test → Directional input diagnosticsController D-Pad Test
Test D-pad up, down, left, right, diagonals, and rapid direction changes. Find missed, stuck, or unexpected controller inputs.
Open free test → Trigger range diagnosticsController Trigger Test
Check left and right controller trigger response, resting values, travel, and maximum input with clear live browser readings.
Open free test → Haptic feature checkController Vibration Test
Check whether your browser can request controller vibration. Test supported rumble motors safely and troubleshoot unavailable haptics.
Open free test → Connection timing diagnosticsBrowser-Observed Controller Update Rate
Estimate how often your browser receives new controller states. Compare connection modes without confusing update rate with input latency.
Open free test → Raw input diagnosticsGamepad Mapping and Raw Input Test
View controller ID, mapping status, raw button indexes, axes, and live values. Diagnose wrong labels and unusual gamepad layouts.
Open free test →Test in context, then confirm.
A web test is ideal for comparing visible controller data, documenting a repair, or quickly screening a used gamepad. It is not a direct electrical measurement or a warranty determination.
If a fault matters, repeat it with a direct cable, another compatible browser, and the game or console where the controller will be used.