EXPLORE TOOLS
PC Diagnostics
Check keyboard, mouse, display, webcam, microphone, speakers and game controllers in your browser. Browse 25 tools below.
Keyboard TesterCheck keys, held combinations and repeated key presses.
Mouse TesterCheck button events, mouse movement and wheel scrolling.
Double Click TesterCheck double-click timing and repeated click events.
Dead Pixel TestCycle full-screen colors to inspect stuck and dead pixels.
Monitor Color & Gradient TestInspect screen gradients and solid color uniformity.
Backlight Bleed TestInspect black and dark-gray screen uniformity.
Monitor Refresh Rate TestEstimate your browser display refresh cadence.
Microphone TesterShow live microphone input levels with permission.
Webcam TesterPreview your webcam directly in the browser.
Speaker Left/Right TesterPlay original short tones for stereo channel checks.
Gamepad TesterInspect connected gamepad buttons and analog stick positions.
Screen Resolution DetectorShow screen size, viewport and pixel ratio.
Browser Feature CheckerCheck camera, WebGL, clipboard and browser APIs.
Typing Speed TestMeasure your typing speed and approximate accuracy.
Reaction Time TestMeasure click response with a randomized visual cue.
Touch Screen TesterTrack touch positions and touches the browser receives.
Fullscreen Monitor TestOpen solid colors, grid and checkerboard patterns.
Browser InformationView browser version, language, platform and connectivity hints.
PC Health CheckRun a browser-based PC and device capability check in one dashboard.
Internet Connection CheckInspect browser connection information, latency and online status.
WebGL GPU CheckerInspect the GPU renderer exposed to your browser and WebGL support.
Windows Error Code LookupLook up common Windows, Update, Device Manager and BSOD error codes.
BSOD Error LookupLook up common Windows blue-screen stop codes and next troubleshooting steps.
Device Manager Error CodesLook up common Windows Device Manager error codes and practical next steps.
PC Browser Diagnostics LabCheck browser-exposed display, CPU, GPU, camera and microphone capabilities with transparent limitations.
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What can you do with PC Diagnostics?
Test the input and output hardware the browser can actually observe: keyboard, pointer, display, camera, microphone and controller. Results are observations, not diagnostic certificates.
Choose the tool that matches the input and output you need. All tools listed here include a workspace and short instructions. For file tools, compatibility depends on the browser and your device.
