controllercheck.org is a lightweight, open-source web tool for testing and calibrating game controllers directly in the browser.
The project is optimized for the PlayStation 5 controller (DualSense standard) but also works with many other HID and XInput gamepads.
This project is still in an early stage of development and is actively evolving.
Website: https://controllercheck.org
This project is still at an early stage and I would really appreciate any kind of help. If you have ideas, find bugs, or want to improve the tool, feel free to open an issue or submit a pull request.