Test Your Devices.
Understand Your Hardware.
Instant, privacy-respecting browser diagnostic tools without installing 500MB proprietary software. Test mechanical keyboards, mice, microphones, stereo speakers/headphones, gamepads, and display refresh rates in seconds.
Keyboard Tester
Test every key on your keyboard, detect ghosting, stuck keys, and multi-key rollover (NKRO) latency.
Mouse Tester
Verify all mouse buttons (left, right, middle, back, forward) and scroll wheel direction and precision.
Double Click Test
Detect faulty mouse switches and unwanted double clicking with customizable threshold detection.
CPS Test (Clicks Per Second)
Measure your clicking speed with 1s, 5s, 10s, 30s, or 60s challenges and get your speed rank.
Microphone Test
Check your microphone audio input level, peak dB volume, frequency response, and live waveform.
Speaker & Tone Test
Generate pure frequencies, sweep from 20Hz to 20kHz, and test speaker clarity and distortion.
Speaker & Headphone Stereo Test (L/R)
Test speakers or headphones: discrete left channel, right channel, center, and 360-degree soundstage sweep.
Gamepad Tester
Test Xbox, PlayStation, Nintendo Switch, and generic USB/Bluetooth controllers. Check stick drift and dual vibration.
Dead Pixel & Screen Test
Inspect LCD, OLED, and LED screens for dead, stuck, or hot pixels across solid colors and gradients.
Screen Refresh Rate (Hz) & FPS
Measure your monitor display refresh rate (60Hz, 120Hz, 144Hz, 240Hz, 360Hz) and frame time stability.
Engineered for Scientific Accuracy
Every test interacts directly with raw hardware event streams provided by your operating system and web browser.
Direct Event Handling
Sub-millisecond high-resolution timing APIs detect switch contact chatter, double clicks, and frame jitter without abstraction layers.
100% Local Privacy
Audio streams, keystrokes, and gamepad coordinates never leave your machine or get transmitted to any external server.
Transparent Limitations
We clearly delineate what the browser can confirm with certainty versus what requires dedicated laboratory electrical equipment.
Frequently Asked Questions
Everything you need to know about browser-based hardware testing.
Do I need to install any software, extensions, or drivers?
No. All diagnostics run entirely on native W3C Web APIs built into modern desktop and mobile browsers.
Is my microphone audio or keyboard typing recorded?
Never. Audio is analyzed in local RAM via Web Audio API AnalyserNode; keystrokes are cleared the instant you release keys or close the tab.
Does this work on smartphones and tablets?
Yes! The responsive interface supports iOS and Android. Microphone, speaker, stereo panning, dead pixel, and refresh rate tools work seamlessly on mobile.
Are the diagnostic results 100% definitive?
The tools accurately reflect hardware signals received by your OS and browser. For deep physical circuit repairs, professional technician inspection is advised.