Controller Tester IO – Online & Free
This free controller tester io lets you confirm your hardware is working correctly before a match, a stream, or a long gaming session. Everything happens live in your browser.
Using this controller tester io
Connect your controller with a cable or pair it over Bluetooth, then press any button to wake up the controller tester io. Once it's detected, every button press and stick movement will show up instantly on screen so you can confirm each part of your controller is working as expected.
Common issues this controller tester io catches
A controller tester io is useful for catching stick drift, dead buttons, unresponsive triggers, and vibration motors that have stopped working. Running this check before a match, a stream, or a long session helps you catch hardware issues early.
Frequently asked questions
If your device isn't detected, try unplugging and reconnecting it, pressing a button to trigger detection, or checking your browser's site permissions. Chrome, Edge, and Firefox all support the Gamepad API used by this tool; Safari's support is more limited.
Frequently Asked Questions
Why isn't my controller detected by this controller tester io?
Browsers usually require a button press before they'll detect a connected controller due to how the Gamepad API works. Press any button, check your cable or Bluetooth connection, and make sure you're using a browser that supports gamepads, such as Chrome, Edge, or Firefox.
Does this controller tester io work with wireless controllers?
Yes. Once a wireless controller is paired with your computer or phone at the operating system level, this tool can read its input the same way it reads a wired controller.
Is this controller tester io free to use?
Yes, this tool is completely free, requires no signup, and runs entirely in your browser without any download.
Can this controller tester io detect stick drift or dead zones?
Yes. Watch the stick position indicator while the stick is centered and untouched. If it doesn't rest at 0.00, 0.00, that can indicate drift or a dead zone issue with your controller.