Device & human tests · in the browser
Test your screen, touch, sound and camera. Right here.
Every test runs in your browser with standard web APIs. No app, no account, no upload. Your files, audio and video never leave the device.
- Fast
- Opens in one tap, no install
- Free
- No sign-up, no limits
- Local
- Nothing is uploaded, ever
Display
9 tests · dark themeDead pixel test
Cycle through seven solid colours and spot stuck or dead pixels in under a minute.
FullscreenWhite screen
Full-screen white at four levels, with a timer, for pixel, uniformity and tint checks.
FullscreenBlack screen
Pure black full screen with a hidden timer: stuck pixels, OLED black, backlight glow.
FullscreenColour screen
Full-screen red, green, blue or a custom hex colour for sub-pixel and tint checks.
FullscreenBacklight bleed test
Black and two near-black greys in a dark room, with a 30-second adaptation timer.
FullscreenScreen burn-in test
Slow cycle of six solid colours that reveals ghost images, retention and burn-in.
FullscreenRefresh rate test
Measure how many frames per second the screen really shows and catch a 120 Hz panel stuck at 60.
ApproximateFPS test
Watch the frames per second your browser draws, add load and see whether the machine keeps up.
ApproximateMotion blur test
Follow a striped tile across the screen and see how much your display smears, ghosts or overshoots in motion.
Fullscreen
Touch
3 tests · phone & tabletTouch screen test
Paint a fullscreen grid with your finger and find the spots your screen does not register.
TouchMulti-touch test
Count how many simultaneous touches your screen tracks, with the maximum your browser reports.
TouchGhost touch test
Leave the screen alone and log every touch that happens by itself, with a timestamp and a mark where it hit.
Touch
Audio & camera
5 tests · speakers or headphonesSpeaker test
Play a tone on the left, right or both speakers, then a frequency sweep and a bass sweep.
SoundHeadphone test
Check each ear, the stereo phase and the frequency range of any wired or Bluetooth headphones.
SoundTone generator
Generate a sine, square, triangle or sawtooth tone at any frequency, panned left, centre or right.
SoundMicrophone test
See your microphone's waveform and level, then record ten seconds and play it back, all on your device.
MicrophoneWebcam test
Preview your camera, read its real resolution and frame rate, flip the mirror and save a snapshot locally.
CameraApproximate
Keyboard & mouse
6 tests · desktopClicks per second test
Click as fast as you can for 1, 5, 10 or 30 seconds and get your clicks per second, with your best kept on this device.
Spacebar counter
Count your space bar presses, free or in a timed round, and keep your best score on this device.
Keyboard test
Light up every key on a map of your keyboard, count the keys that work and see how many register at once.
Mouse test
Click every button, catch a bouncing switch, time your double-click and estimate the polling rate of your mouse.
ApproximateScroll wheel test
Count every wheel step, catch a wheel that jumps backwards and see how fast it scrolls.
Gamepad test
See every button, stick and trigger of your controller light up in the browser, and test its vibration.
Gamepad
Reaction & skills
6 tests · any deviceReaction time test
Tap the moment the screen lights up and get your average reaction time in milliseconds.
FullscreenApproximateNumber memory test
Remember a number, type it back and see how many digits your short-term memory holds.
FullscreenSequence memory test
Watch tiles light up, tap them back in the same order and see how long a sequence you remember.
FullscreenVisual memory test
Remember a pattern of lit tiles at a glance and see how many tiles you can hold at once.
FullscreenAim test
Hit each target as fast as you can and get your average time per target and your accuracy.
FullscreenApproximateTyping speed test
Type common words for 15, 30 or 60 seconds and get your words per minute and accuracy.
Fullscreen