Keyboard Tester Online | DeadPixelTest.net

Last key pressedPress any keyThe key name and physical code will appear here.

Caps offNum offScroll off

FULL-SIZE 104-KEY TESTER

Use a physical keyboard for hardware testing. On touch devices, you can also tap the visual keys to preview the tester. Tested keys stay blue; keys currently held down turn orange.

Direct answer

What does this keyboard tester check?

It checks whether your browser receives each physical key press and highlights the matching key on a full-size visual keyboard. It can help identify unresponsive keys, repeated input and modifier-key behavior on desktop, laptop and external keyboards.

✓ No installation✓ Works in compatible browsers✓ Privacy-focused testing

Keyboard testing tips

Test modifier keys individually and in combinations. Browser or operating-system shortcuts may intercept some keys before the webpage receives them.

Explore more diagnostics

Choose another test

Move between screen, camera, audio and device checks without returning to the homepage.

View all tests

Dead Pixel TestInspect solid colors for dead, stuck, bright or dark pixels. Touch Screen TestCheck touch coverage, dragging continuity and dead zones. Keyboard TesterTest a full-size keyboard and confirm every key press. Mouse TesterTest buttons, wheel, movement, dragging and double-clicks. Audio TesterCheck speakers, stereo channels, tones and microphone input. Camera & WebcamTest built-in, USB, phone, tablet and compatible TV cameras. Microphone TesterView microphone levels, waveform, recording and playback. Pixel ExerciserExercise a suspected stuck-pixel area with changing colors. Gradient TestInspect gradients, tonal transitions and visible banding. Brightness & ContrastCheck black levels, white saturation and contrast separation. Screen Size TestView viewport, resolution, pixel ratio and display data. Text SharpnessInspect text rendering, browser scaling and clarity. Motion & GhostingObserve motion blur, ghosting and response behavior. Resolution & ScalingCheck screen resolution, CSS pixels and scaling. Device InformationReview screen, browser, hardware and platform information. Browser CapabilityCheck which browser APIs and hardware features are supported. Network TestCheck connection status, latency and estimated download speed. GPS & LocationTest browser geolocation, accuracy, altitude and speed. Sensor TesterTest orientation, motion, acceleration and rotation sensors. Multi-Touch TesterTrack multiple touch points, pinching and rotation gestures.