ControllerTest

ControllerTest is a browser-based diagnostic tool for gamepads, controllers and repair workflows. The goal is simple: make controller condition easier to understand before a purchase, repair, warranty conversation or setup change. The tester reads the browser Gamepad API locally and turns raw input into practical checks: live button mapping, analog stick drift, deadzone guidance, trigger travel, circularity, polling-rate estimates and vibration capability detection. The site is designed as a tool-first experience, providing users with immediate access to testing functionalities.