Gamepad Tester & Debugger - Live Controller Diagnostics in Your Browser

PS5 DualSensePS4 DualShockXbox SeriesXbox OneSwitch ProGeneric PCModded JoyConsPS3 Gear

If you've ever dealt with a controller that registers ghost inputs or a joystick that refuses to sit still, you already know how frustrating it is to troubleshoot blind. That's exactly why I built this tool, a fully free, online gamepad tester that runs straight in your browser with no download required.

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Live via HTML5 Gamepad API

Pulls live data from your inputs the moment you connect.

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All Supported Devices

Handles PS5, Xbox, Switch, and PC controllers.

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Deep Test Suite

Run button and joystick tests to map out accuracy.

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Microphone & Vibration

Judge vibration controls and motor strength.

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Analog Calibration

Fine-tune dead zones and thresholds.

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Raw Numbers That Matter

View axis offsets and response curves.

Stick Drift Fix - Diagnose Your Joystick with a Live Drift Tester

The moment your gamepad starts moving on its own, the first real step is to locate the source, and that's where our online gamepad tester comes in. Using the drift tester, you can verify joystick drift in seconds and identify whether the problem sits in the hardware or software.

Disassembled modern gaming controller showing internal circuit board and analog stick modules for repair diagnostics

1Start by checking if a firmware or drivers update resolves the issue.
2Use the built-in calibration tools to calibrate your controller and adjust sensitivity.
3If drift persists, clean the joystick carefully with isopropyl alcohol to clear debris affecting the contacts.
4Should that fail, the next step is to replace the joystick modules entirely.
5Run a controller button test to catch any faulty buttons, stuck buttons, or unresponsive inputs.
6Check the button contacts and worn-out rubber pads, re-solder any damaged connections, replace degraded parts.
7Update your controller drivers.
8Retest everything using the controller tester to confirm all button issues are resolved before you call it done.

Why This Gamepad Tester Stands Apart

Feature	What It Means for You
Official Gamepad API	Frame-perfect readouts across Windows, macOS, and Linux. No estimation, no averaging.
Cross-Platform Browser Support	Runs in Chrome, Edge, or Firefox without any extra software or installation on any desktop OS.
Instant Press Visualisation	The moment you connect, it visualises every press the instant it registers, giving you instant feedback powered directly by the Gamepad API.
True Drift Detection	Quantifies left and right-stick offset so you're reading real calibration data from the stick itself, not guessing.
Multi-Controller Support	Connect up to four gamepads at once and monitor them side by side, invaluable when comparing two controllers during a repair session.
All-in-One Built-In Tools	Vibration tester, microphone test, and integrated analog calibration check, all built-in and 100% browser-based with no installation required.
Trusted by Professionals	Competitive gamers, speedrunners, and repair shops all rely on these metrics to maintain tournament-ready controllers.
Troubleshooting Library	Connects you to a growing library of troubleshooting guides and tutorials covering everything from joystick drift fixes to USB port replacements across all consoles.

Trusted by gamers and repair professionals alike, this free online gamepad testing tool is fully compatible with all major controller brands, including PS4 and PS5 controllers. Explore the guide section or our input lag monitor and you'll find fast, accurate answers that save both time and money on unnecessary repair or replacements.

Button, Stick & Vibration - Full Controller Test in One Session

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Button Response

During any controller test session, this Gamepad Tester lights up every face, shoulder, and trigger input the moment it registers, letting you confirm pressure, travel, and simultaneous presses with the kind of button response clarity that matters most on PC gaming controllers.

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Stick Heatmaps & Deadzone Scan

Spin both thumb-sticks through their full range and the tool instantly plots heatmaps that reveal stick drift, drift amplitude, and deadzone thresholds in a single deadzone scan, something I've found cuts controller tester diagnostic time in half.

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Vibration Motor Test

Activate a single burst or continuous rumble through the vibration controller test to check motor strength by feel, giving you a complete picture of how your controller performs across every layer of the test.

Universal Controller Tester - Sony, Microsoft, PC & Beyond

This professional controller test tool offers coverage across Sony, Microsoft, and PC ecosystems, making it the trusted universal controller tester for modders and repair professionals alike. For detailed haptic analysis, check our vibration test module.

Controller	Connection	Key Features Detected
PS4 / PS3	Wired & Bluetooth	Light-bar feedback, motion sensing, analogue face buttons from legacy titles, all fully charted in real time
PS5 DualSense	USB / Bluetooth	Adaptive triggers, gyro, advanced haptics, firmware version displayed so you always know when to update
Xbox One	USB / Wireless	Impulse triggers, share button, and rear paddles all logged, firmware, battery level, and status indicators captured live
Xbox Series	USB / Wireless	Impulse triggers, share button, and rear paddles all logged, firmware, battery level, and status indicators captured live
Generic PC Gamepads	USB / Bluetooth	XInput or DirectInput from all major brands, rumble compatibility and D-pad diagonals reported so nothing gets missed
Switch Pro	USB / Bluetooth	Full motion sensors and HD-rumble supported readouts, gyro alignment aids that help verify motion accuracy across every input

From niche devices to mainstream Xbox hardware, this tool is built to handle it all without compromise.

How to Use the Gamepad Tester - Connect, Test & Verify in Minutes

1

Connect Your Controller

Connect your controller via USB-C, Micro-USB, or Bluetooth pairing, then let the Gamepad API guide the rest, press any button and the Gamepad Tester updates the icon instantly, so if nothing changes, that switch is likely faulty.

2

Rotate the Joystick

Rotate the joystick and the Gamepad Tester traces a live path of every movement, letting you verify full range and smoothness without any guesswork — something I always do first when diagnosing a controller that feels slightly off.

3

Run the Vibration Test

Click the vibration test button, select infinite vibration, and the Gamepad Tester engages the motors so you can feel their operation immediately and confirm everything is working as it should.

Technical diagram of gaming controller internal components illustrating precision testing and sensor calibration points

Quick Fixes When Your Controller Won't Show Up

Windows

Close Exclusive-Mode Apps

If Gamepad Tester fails to detect your pad on Windows, close any exclusive-mode apps like Steam Big Picture that may be blocking access, this is the first thing I check and it resolves the issue more often than you'd expect.

macOS

Use Chrome or Firefox

On macOS, stick to Chrome or Firefox since Safari only exposes partial Gamepad API events, limiting what the tool can read from your controller. You can verify browser compatibility using our deadzone scan.

All Platforms

Vibration Not Triggering

If vibration fails to trigger, make sure your browser tab is focused and that your system accessibility settings allow haptic feedback, a small tweak that's easy to miss but essential for the Gamepad API to deliver full results.

Comparison infographic explaining the difference between software recalibration and physical hardware repair for controller drift

Get More From Every Test - Advanced Diagnostics Tips

🔬For deeper analysis, watch the numeric axis and button gauges while slowly sweeping the sticks to the edges, consistent flat spots or delayed changes are clear signs that worn potentiometers or trigger sensors need attention, and from personal experience, catching this early saves a costly replacement.

⚡For latency checks, mash the triggers rapidly and watch the delay read-out to see exactly how your controller responds under pressure.

🧹Regular cleaning with compressed air and isopropyl alcohol can also significantly mitigate drift that the Gamepad Tester detects, keeping your inputs sharp between full diagnostic sessions.

Frequently Asked Questions

Set the controller flat on a desk and leave both sticks completely untouched. Watch the axis values for 10 seconds. If either axis reads consistently above 0.14 without any input, early drift is present. If values reach above 0.25, the drift is advanced enough to visibly affect gameplay. A single spike to 0.03 or 0.04 is normal electrical noise and is not drift.

Yes. All buttons, analog sticks, triggers and touchpad clicks register correctly in Chrome and Edge. DualSense adaptive haptics require Chrome or Edge specifically as Firefox does not have full DualSense haptic API support. The touchpad functions as a clickable button in all browsers rather than as a full touch surface.

Yes. Xbox controllers use XInput which Windows and the browser Gamepad API support natively. All buttons, both analog sticks, both triggers as analog values, bumpers, d-pad and stick click buttons register correctly. The Share button may not register in all browsers due to browser-level limitations, not a controller issue.

A deadzone is an intentional neutral zone built into games where small stick movements near center are ignored. It exists to prevent micro-movements from causing unintended actions. Drift is the opposite: the controller hardware itself is registering movement without any input. This tester shows raw Gamepad API values before any game deadzone is applied, which means you see hardware-level drift even when your game is currently hiding it.

Three situations make testing especially useful. First, before your manufacturer warranty expires. Document axis values above 0.14 and you have evidence for a warranty replacement claim. Second, before buying a used controller. A 60-second test catches hidden drift that the seller may not disclose. Third, after attempting a cleaning fix with isopropyl alcohol. Test the axis values before and after to confirm whether the fix worked.

Work through these in order. Press any button first as browsers require this interaction to activate gamepad detection. Close Steam or the Xbox app completely as they lock controller access. Switch to Chrome or Edge. Plug directly into a rear USB port and bypass any hub. If using Bluetooth, remove the controller from your OS settings entirely and re-pair from scratch.

Below 0.10 is excellent, the stick is centered and stable. Between 0.10 and 0.14 is acceptable but worth retesting in four to six weeks. Consistently above 0.14 means early drift is confirmed. Above 0.25 means the drift will actively move your character or camera in games without any input from you.

Yes on Android with Chrome. Controllers connected via USB-OTG or Bluetooth register correctly. iOS Safari support is limited and unreliable. For the most accurate axis readings and haptic testing, a desktop or laptop with Chrome or Edge gives the best results. Mobile works for basic button and connection checks.

Nothing at all. This tester runs entirely in your browser using the Web Gamepad API, a standard built into Chrome and Edge. No extensions, no downloads, no drivers, no account. Close the tab when you are done and nothing is stored anywhere.

🎮 Ready to Test?

USB Connection

Wireless Pairing

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