Local by default
Test events, typed samples, controller state and skin pixels are processed in your browser. The suite does not need an account to produce a result.
Input & Hardware Test Lab
Explore every CPSCount input, reflex and hardware tool in one place—from classic click, reaction and keyboard tests to detailed diagnostics and Minecraft creation tools.
Local processing Instant results Responsive design
One honest note
Browser tests show what the page receives
They are excellent for comparison and troubleshooting, but they do not replace electrical analyzers or manufacturer diagnostics. Each page explains exactly what its result can—and cannot—measure.
5 tools
Speed & typing
Tap Speed TestMeasure taps per second or use the unlimited touch counter.
APM TestMeasure keyboard, mouse and touch actions per minute.
Words Per Minute TestMeasure WPM, accuracy and corrected character pace.
Click CounterCount mouse clicks without a timer and reset whenever you like.
Spacebar ClickerMeasure spacebar presses and practice keyboard tapping speed.
6 tools
Mouse
Mouse Scroll TestInspect wheel direction, delta, event rate and skipped steps.
Double Click Latency TestMeasure the interval between clicks and flag switch bounce.
Browser Input Latency TestEstimate event dispatch delay for mouse, key and touch input.
Mouse Rate TestEstimate delivered pointer events per second and interval stability.
Reaction TestMeasure visual reaction time across repeatable browser rounds.
Mouse Button TestVerify primary, secondary, middle and extra mouse buttons.
4 tools
Display & touch
Touch Screen TestCheck touch points, multi-touch capacity and screen coverage.
Monitor Hz TestEstimate the frame rate the browser is actually presenting.
Screen Resolution TestSee screen, viewport, DPR, orientation and color depth.
Dead Pixel TestInspect the full screen for stuck, dead or discolored pixels.
4 tools
Keyboard
Key Rollover TestMeasure simultaneous keys and reveal blocked combinations.
Mechanical Keyboard TestCount switches and detect suspiciously rapid chatter signals.
Mac Keyboard TestTest a Mac-labeled ANSI layout and modifier combinations.
Keyboard TestCheck everyday keyboard keys on a familiar virtual layout.
1 tool
Controllers
2 tools
Minecraft
Private, practical browser diagnostics
Clear measurement boundaries
Every tool distinguishes delivered browser events from direct USB, panel or electrical measurements so results stay useful and understandable.
Built for comparison
Repeat tests on the same setup, change one variable at a time and use medians or longer samples when the tool provides them.