All tools
Every test on CheckItWorks, grouped by what it checks.
Display
Dead Pixel Test
Cycle through solid colors to spot dead, stuck, or hot pixels on any screen in under two minutes.
Start testTouchscreen Test
Sweep for dead zones, check multi-touch, watch for ghost touches, and test hold steadiness — right in your browser.
Start test
Input devices
Keyboard Test
Light up every key as you press it and track your keyboard's real rollover limit live.
Start testMouse Test
Press every button, scroll the wheel, and get an honest polling-rate estimate — including whether your browser can even measure one.
Start testGamepad Test
Check your controller for stick drift, deadzone, trigger travel, full button coverage, and rumble — right in your browser.
Start test
Audio & video
Microphone & Speaker Test
Check your mic level and clipping, then test left and right speakers with a frequency sweep.
Start testWebcam Test
See your camera's actual resolution and frame rate, not just the number it advertises, plus checks for a black or frozen picture.
Start test
Performance
FPS Test
Measure your real frame rate for 10 seconds and see average FPS, 1% lows, jank, and your display's inferred refresh rate.
Start testInternet Speed Test
Measure download, upload, ping, and jitter in your browser, and see why the number differs from your plan.
Start testTyping Speed Test
Measure typing speed in WPM and CPM with accuracy and consistency, in your own language, on a keyboard or a phone.
Start testGPU Benchmark
Check hardware acceleration, real WebGL throughput, and thermal throttling — right in your browser, no install.
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Network
Ping & Packet Loss Test
Measure round-trip latency, jitter, and how much your connection slows under load — and see why a browser can't show real packet loss.
Start test