Mouse Wheel Test & Scroll Benchmark

Test mouse scroll wheel direction, detect reverse bounce glitches, and benchmark scroll speed directly in your browser popup.

Test your mouse scroll wheel performance, detect reverse jumping glitches, and benchmark scroll speed with zero setup — directly in your browser toolbar popup. Whether you're troubleshooting a mouse wheel that jumps in the wrong direction, testing a new gaming mouse, or verifying repairs after cleaning, Mouse Wheel Test provides instant hardware-level feedback. KEY FEATURES: • Real-Time Scroll Direction Monitor: Instant visual indicators for scroll down (↓) and scroll up (↑). • Reverse Jitter & Bounce Detection: Automatically flags erratic inverted signals caused by dirty or worn rotary encoders. • Scroll Speed & Velocity Measurement: Calculates peak scroll velocity in pixels per second (px/s). • 10-Second Scroll Benchmark: Test your scroll wheel stamina and consistency with an automated timer. • Encoder Health Score: Displays overall signal integrity percentage in real time. • 100% Offline & Private: Zero telemetry, zero tracking, zero background network requests. All tests execute entirely on your machine. HOW TO USE: 1. Click the Mouse Wheel Test icon in your Chrome toolbar. 2. Place your mouse cursor inside the dashed capture box. 3. Scroll up and down to view your live pulse count, direction, and speed. 4. Need deeper diagnostics or an 8000Hz polling rate certificate? Click "Open MouseWheelTest.com" for the full online diagnostic suite.