Description

nputBench is a free browser-based input diagnostic site for testing common mouse and keyboard problems without installing software. It is built for users who want to understand whether their browser is receiving the expected input signals before changing settings, cleaning a device, or replacing hardware.

The site includes guided tools for scroll wheels, mouse buttons, double-click behavior, mouse polling rate, keyboard keys, and spacebar speed. For example, the Scroll Test helps check wheel direction, reverse scroll signals, sensitivity, stability, and horizontal scroll events. The Double Click Test asks users to make slow single clicks and looks for suspicious repeated triggers, such as very short click intervals that may indicate accidental double-click behavior. The Mouse Test checks left, right, middle, back, forward, and basic wheel input, while the Keyboard Test focuses on keydown and keyup behavior.

InputBench is intentionally careful about its conclusions. A browser test cannot directly prove that a mouse switch, wheel encoder, keyboard key, driver, or firmware is broken. It can only show what the browser receives. That limitation is part of the product design: the goal is to provide useful browser-observed evidence, plain-language explanations, and practical next actions rather than overclaiming hardware failure.

The project is aimed at making input troubleshooting clearer for everyday users while still giving technical users access to advanced diagnostics when needed.