ControllerTest

Hi everyone! 👋 I’m the maker of ControllerTest, a free tool for checking game controllers directly in your browser. The goal is to help you answer practical questions: Is my stick drifting? Do all the buttons work? Is this used controller worth buying? Did a repair fix the problem? You can test buttons, sticks, triggers, deadzones, and supported vibration, then export a health report to keep or compare later. Controller input data is processed locally in your browser. I’d love to hear which controller you tested, whether anything was confusing, and what would make the tool more useful for you. Thanks for trying it!

The live diagram that lights each button and prints stick coordinates is what I would use before buying a used pad, especially the drift line that says whether the sticks are centered. Exporting that as a health report in JSON or CSV is the part I would keep, so a before-and-after repair is not just a memory of the screen.

A browser tester is most useful if it separates real stick drift from a calibration offset. Does the page show a numeric deadzone and raw axis values at rest, and have you checked the same pad over Bluetooth in Chrome versus Firefox? Gamepad API mappings differ there, so a stick that looks centered in one browser can read as drifting in the other.

The polling-rate estimate is a nice touch. For before/after repair checks it would help if each exported report also recorded the connection type (USB, Bluetooth, or a dongle) and the browser, because those change the timing more than the pad itself. Do you warn people when the tab is in the background? Chrome slows timers there, so the numbers can look worse than they are.

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