# Gpad Tester (gpad-tester.com)

> Free online gamepad tester and controller tester that runs in the web browser using the Gamepad API. It checks buttons, analog sticks, stick drift, triggers, D-pad and vibration on PS5 DualSense, PS4 DualShock 4, Xbox Series X|S / One / Elite, Nintendo Switch Pro, Joy-Con, 8BitDo, GameSir and generic PC controllers. No download, no account, nothing uploaded.

Key facts:
- Stick resting values: 0.00–0.02 normal, 0.03–0.08 light drift, 0.09–0.15 clear drift, above 0.15 strong drift.
- Browsers only expose a controller after a button is pressed while the page is open (privacy rule of the Gamepad API).
- Vibration from a web page works in Chrome, Edge, Opera, Brave and Safari 16.4+ on Mac; not in Firefox or on iPhone/iPad.
- Gyro, touchpad and battery of DualSense / DualShock 4 can be read with WebHID in Chrome, Edge and Opera.

## Tools
- [Controller Button Test](https://gpad-tester.com/button-test/): Press each button and see it light up. Find dead, sticky or double-pressing buttons on any Xbox, PlayStation or PC controller. Free online test.
- [Controller Calibration: Guide & Live Checker](https://gpad-tester.com/controller-calibration/): Calibrate your controller's sticks and triggers. Step-by-step for DualSense, DualShock 4 and Xbox, plus a live view to check the result. Free.
- [Controller Input Test](https://gpad-tester.com/controller-input-test/): See every input your controller sends in real time: buttons, axes, triggers and D-pad. Find dead or ghost inputs on any USB or Bluetooth gamepad.
- [Deadzone & Circularity Test](https://gpad-tester.com/deadzone-test/): Measure your controller's deadzone, outer range and circularity error. See how your sticks compare and which in-game deadzone to set. Free, in your browser.
- [How to Test a Controller on PC (Windows, Mac, Linux)](https://gpad-tester.com/gamepad-tester-pc/): Test any controller on Windows, Mac, Linux or Chromebook in your browser. USB and Bluetooth setup, browser support, and fixes if it isn't detected.
- [Controller Gyro & Motion Test](https://gpad-tester.com/gyro-test/): Test the gyroscope and accelerometer on DualSense, DualSense Edge and DualShock 4 controllers. See live motion data and spot gyro drift. Free, in your browser.
- [Gamepad Tester: Test Any Controller Online](https://gpad-tester.com/): Free gamepad tester in your browser. Check buttons, stick drift, triggers and vibration on PS5, PS4, Xbox, Switch and PC controllers. No download needed.
- [Joystick Tester](https://gpad-tester.com/joystick-tester/): Test analog sticks, flight sticks, HOTAS and fight sticks online. Check every axis and button, range and centering. Works with any USB or Bluetooth joystick.
- [Controller Polling Rate Test](https://gpad-tester.com/polling-rate-test/): Check your controller's polling rate (Hz) and input timing in your browser. Compare USB vs Bluetooth on Xbox, DualSense, 8BitDo and GameSir pads. Free.
- [PS4 Controller Tester (DualShock 4)](https://gpad-tester.com/ps4-controller-tester/): Test your PS4 DualShock 4 controller online. Check buttons, sticks, drift, touchpad and vibration on PC. Includes a PS3 controller section. Free.
- [PS5 Controller Tester (DualSense & DualSense Edge)](https://gpad-tester.com/ps5-controller-tester/): Test your PS5 DualSense or DualSense Edge online. Check buttons, triggers, stick drift, touchpad and vibration on PC or Mac. Free, no download.
- [Stick Drift Test: Is Your Controller Drifting?](https://gpad-tester.com/stick-drift-test/): Run a free stick drift test in your browser. See the exact resting offset of each analog stick on PS5, PS4, Xbox and Switch controllers, and what to do next.
- [Switch Pro & Joy-Con Controller Tester](https://gpad-tester.com/switch-pro-controller-tester/): Test a Switch Pro Controller, Joy-Con, 8BitDo or GameSir pad online. Check buttons, sticks and drift on PC or Mac. Free, no download.
- [Controller Vibration Test](https://gpad-tester.com/vibration-test/): Test your controller's vibration online. Fire the left and right rumble motors on Xbox, PS5, PS4 and PC gamepads to check they work. Free, instant.
- [Xbox Controller Tester](https://gpad-tester.com/xbox-controller-tester/): Test your Xbox Series X|S, Xbox One or Elite controller online. Check buttons, triggers, sticks, drift and rumble on PC in seconds. Free, no install.

## Guides
- [Controller Not Detected? Fixes for PC, Mac & Chrome](https://gpad-tester.com/blog/controller-not-detected/): Controller not detected by your PC, Mac or browser? Try these fixes in order: press a button, swap the cable, close Steam, re-pair Bluetooth and more.
- [How to Calibrate a PS4 Controller (and Does It Help?)](https://gpad-tester.com/blog/how-to-calibrate-ps4-controller/): Can you calibrate a PS4 controller? How to reset a DualShock 4, calibrate it in Steam on PC, set the right deadzone, and check the result online.
- [How to Check for Stick Drift (PS5, Xbox, Switch)](https://gpad-tester.com/blog/how-to-check-for-stick-drift/): How to tell if your controller has stick drift in 2 minutes: the hands-off test, the snap-back test, and what the numbers mean for PS5, Xbox and Switch.
- [How to Fix Stick Drift: Recalibrate, Clean, Replace](https://gpad-tester.com/blog/how-to-fix-stick-drift/): Fix controller stick drift step by step: update, clean, recalibrate, raise the deadzone, use the warranty or replace the stick with Hall effect or TMR.
- [Controller Testing Guides](https://gpad-tester.com/blog/): Guides to test, fix and calibrate PS5, PS4, Xbox and Switch controllers: stick drift, dead buttons, vibration and connection problems.

## About
- [About Gpad Tester](https://gpad-tester.com/about/): Gpad Tester builds free, private, in-browser tools to test gamepads and controllers: drift, buttons, triggers, vibration, polling rate and more.
- [Contact us](https://gpad-tester.com/contact/): Contact the Gpad Tester team with bug reports, controller mapping issues, feedback or partnership questions.
- [Privacy policy](https://gpad-tester.com/privacy/): Gpad Tester runs entirely in your browser. No controller data is uploaded, no accounts, no tracking cookies. Read the full privacy policy.
- [Terms of use](https://gpad-tester.com/terms/): Terms of use for Gpad Tester's free online controller testing tools.

Full text of every page: https://gpad-tester.com/llms-full.txt