Browser hardware diagnostics
Find out whether it's your hardware or the game.
Plug something in and test it right here. Controllers, monitors, graphics adapters, speakers, microphones, keyboards and mice — live readouts and real measurements, no install. Nothing is uploaded; every test runs locally in the browser.
Gamepad Tester
Buttons, sticks, triggers, rumble
Test any wired or wireless controller — PlayStation, Xbox, Switch or generic HID. Live button and axis readouts, stick drift and circularity analysis, trigger travel and vibration.
OpenGPU Tester
Adapter info, limits, stress test
Identify the graphics adapter your browser is really using, inspect WebGL and WebGPU capabilities, and push it with a scaling render load while watching frame time.
OpenDisplay Tester
Dead pixels, bleed, banding, ghosting
Flood the screen with test patterns to hunt dead and stuck pixels, backlight bleed, colour banding, crushed blacks, ghosting and scaling problems.
OpenMic Tester
Level, waveform, spectrum, playback
Check that your microphone is picking up sound, see the live waveform and frequency spectrum, measure input level in dB, and record a clip to hear yourself back.
OpenSpeaker Tester
Channels, sweep, tones, output meter
Check speakers or headphones: prove each channel plays on the right side, sweep 20 Hz to 20 kHz to find buzzing or a dead range, and watch a live meter that shows sound is leaving the page.
OpenKeyboard Tester
Key codes, rollover, stuck keys
Press every key and watch it light up. Find dead or stuck switches, measure n-key rollover, inspect raw key codes and repeat behaviour.
OpenMouse Tester
Buttons, wheel, polling rate, clicks
Test every mouse button and the scroll wheel, measure real polling rate and click latency, hunt for double-click faults and sensor jitter.
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