Gamepad Viewer is a web-based tool that lets users visualize and test their game controller in real time. It displays button presses, trigger inputs, joystick movement, and controller connectivity, making it ideal for gamers, streamers, developers, and testers. Whether you're troubleshooting a controller, creating gaming content, or checking input accuracy, Gamepad Viewer provides a simple, fast, and user-friendly experience without requiring software installation.