JoyCheck
Haptics
Buttons
Axes
Deadzone & response curve
Latency tester
Vibration presets
Event log
Input heatmap
Keyboard
Keyboard fallback active. WASD/Arrows for sticks, 1-4 face buttons, Q/E bumpers, Z/C triggers.
Gamepad · Controller · Joystick · Wheel
The 30-second gamepad tester.
Connect a controller. Every button, stick, trigger, and vibration motor is read in real-time. No download, no account, no telemetry.
- browser-side
- no install
- W3C Gamepad API
Works best on desktop. Plug in a controller there.
HOW IT WORKS
How do you test a controller in 30 seconds?
Plug in or pair
Connect your controller by USB, or pair it over Bluetooth.
Press any button
That wakes the browser's Gamepad API so JoyCheck can detect your pad.
Read live values
Watch every button, stick, trigger, and motor respond in real time.
WHAT WE TEST
What does JoyCheck test?
JoyCheck is a browser-based gamepad tester and controller tester that reads six hardware areas in a single pass. The browser reads each input via the W3C Gamepad API at every animation frame, so you see live values rather than averaged or smoothed readings.
Buttons
Every face button, bumper, shoulder, and menu key. Detect stuck inputs, double-clicks, and dead buttons.
Analog sticks
X/Y axis ranges, deadzone visualisation, and stick drift detection at 0.1% resolution.
Triggers
Analog pressure curves on L2/R2, ZL/ZR. Read 0.00 to 1.00 in real time.
Vibration
Send rumble pulses to test both motors independently. Catches dead haptics in seconds.
Polling rate
Measured Hz from the actual input stream. Compare against the manufacturer's spec.
Latency
Press-to-event roundtrip time. Useful for esports players checking competitive setups.
Across years of hardware-diagnostic work on PC peripherals and game controllers, browser-based testing has caught roughly two-thirds of the faults that game-side settings would never have surfaced. The W3C Gamepad API reads what the controller is physically reporting, which is a different layer of truth than what any single game sees.
Taimoor BamazaiFounder, Elites Algorithm Limited
NOT WORKING?
Which controllers does JoyCheck support?
JoyCheck supports every controller that exposes itself to the W3C Gamepad API. That covers PlayStation DualSense and DualShock 4, Xbox Series and Xbox One pads, Switch Pro and Joy-Con, and third-party Hall-effect controllers from 8BitDo and GuliKit. If your gamepad doesn't appear in the test, find your exact model below. We cover the pairing quirks, driver gotchas, and browser-permission steps for every major brand.
DIAGNOSE & FIX
How do you fix a drifting or broken controller?
Once the tester shows you the numbers, these guides take you from diagnosis to repair: how stick drift actually works, which sensor upgrade ends it for good, and the platform-specific repair walkthroughs.
CALIBRATE & SET UP
How do you calibrate your controller?
Each platform calibrates differently. These walkthroughs cover the PlayStation, Xbox, and PC paths, from Sony's re-zero menu to dead-zone tuning on the desktop.
Frequently asked questions about browser-based gamepad testing
Why does my gamepad need a button press to be detected?
Browsers don't expose connected gamepads until you press a button, this is a privacy / power-saving choice from the Gamepad API spec. Press any button on your controller after plugging it in.
Does this work over Bluetooth?
Yes, most modern controllers (PS5 DualSense, Xbox Series X|S, Switch Pro, 8BitDo) work over Bluetooth in Chrome, Edge, and Firefox. Safari coverage is limited.
Is my controller data sent to your server?
No. Every input is processed entirely in your browser via the W3C Gamepad API. We don't run analytics or telemetry on inputs.
Why is the polling rate lower than the manufacturer claims?
Two different things are being measured. The live tester on this page samples once per animation frame, so its rate follows your display, usually 60 to 144 Hz. To read the controller's true update rate, use the dedicated controller polling rate test, which samples far faster and reports the real Hz, up to about 1000 Hz. Even then the figure is a floor, because the browser's input pipeline can cap what a page is allowed to observe.
Can I test on mobile?
Yes, both iOS Safari 16+ and Android Chrome support the Gamepad API. Pair your controller in system settings, then return to this page.
What is the fastest way to confirm stick drift?
Open JoyCheck, set the controller flat on a table, hands off the sticks, and watch the X/Y axis readings for 30 seconds. Healthy sticks at rest read 0.00 ±0.02. A steady offset above ±0.05 confirms drift. Full diagnostic walkthrough in the stick drift explained guide.
Do I need to install anything to use JoyCheck?
No. JoyCheck runs entirely in your browser via the W3C Gamepad API. There is no installer, no driver download, and no account. Open the page, plug in your controller, press any button, and the live diagram appears within five seconds.
How does JoyCheck read your controller, and is your data private?
You can test a game controller in the browser in under 30 seconds. No download, no installer, no account. Plug your controller in (or pair via Bluetooth), open this page, and press any button to wake it up. JoyCheck reads every press, stick position, trigger curve, touchpad swipe, gyroscope reading, and rumble motor on every animation frame via the W3C Gamepad API. Works on PS5 DualSense, PS4 DualShock 4, Xbox Series X|S, Xbox One, Switch Pro, Joy-Con, 8BitDo Pro 2, GuliKit KingKong 3, and generic XInput / DirectInput pads.
JoyCheck reads inputs through the W3C Gamepad API, the same browser-native interface every modern game, tool, and remapper sees. No install, no driver, no telemetry. The controller’s input never leaves your machine.
Source: W3C Gamepad API specification
Test your controller in the browser
No install, no account. Your inputs never leave your device.