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XUtilHub

Free Online Device Tests – Mic, Webcam, Keyboard, Mouse & Screen

Check that your hardware works before a call, a game or a purchase: test your microphone, webcam and speakers, find stuck keys and double-clicking mouse buttons, check a controller for stick drift, look for dead pixels and measure your screen's resolution and refresh rate. Then challenge yourself with click speed, spacebar and reaction time tests.

12 tools

Mic TestNEW

Test your microphone online: live input level and waveform, record and play back 5 seconds, pick a device and see if your mic is working. Nothing is uploaded.

Webcam TestNEW

Test your webcam online: live preview, actual resolution and frame rate, camera picker, mirror view and snapshot. Private: video never leaves your device.

Speaker TestNEW

Test your speakers and headphones: play sound on the left, right or both channels, run a stereo sweep, and generate tones from 20 Hz to 20 kHz.

Keyboard TesterNEW

Test your keyboard online: every key lights up when pressed, with key codes, a count of tested keys and how many keys work at once (rollover and ghosting).

Mouse TesterNEW

Test your mouse buttons, side buttons and scroll wheel, and detect a faulty switch that double-clicks when you click once.

CPS TestNEW

How fast can you click? Measure your clicks per second (CPS) over 1, 5, 10, 30 or 60 seconds and beat your personal best.

Spacebar CounterNEW

Count how many times you can press the spacebar in 1, 5, 10, 30 or 60 seconds, with presses per second and your best score.

Reaction Time TestNEW

Test your reaction time in milliseconds: wait for green, click as fast as you can, and get your average over 5 rounds and your best time.

Gamepad TesterNEW

Test your game controller online: buttons, triggers, analog sticks and vibration for Xbox, PlayStation, Switch Pro and PC gamepads. Check for stick drift.

Dead Pixel TestNEW

Check your monitor, laptop or phone screen for dead and stuck pixels with full-screen solid colors. Click or use arrow keys to change color.

Refresh Rate TestNEW

Find your monitor's refresh rate (60, 120, 144, 165, 240 Hz and more), see frame times and dropped frames, and check motion smoothness.

Screen ResolutionNEW

See your screen resolution, browser window size, device pixel ratio, aspect ratio, refresh rate, color depth and HDR support instantly.

Test your hardware in your browser

No downloads, no drivers, no sign-up: open a test and get an answer in seconds. Check your setup before an important call, troubleshoot a problem, inspect a used device before buying it, or check a new monitor within the return period.

Which test do I need?

I want to…Use
Check my microphone before a callMic Test
Check my camera before a video meetingWebcam Test
Check left/right speakers or headphonesSpeaker Test
Find a broken or stuck keyKeyboard Tester
Check mouse buttons or a double-clicking mouseMouse Tester
Check a controller for stick driftGamepad Tester
Look for dead pixels on a screenDead Pixel Test
Confirm my monitor runs at 144 HzRefresh Rate Test
Find my screen resolutionScreen Resolution
Measure my clicks per secondCPS Test
Count spacebar pressesSpacebar Counter
Test my reflexesReaction Time Test

Your privacy

Camera and microphone tests only start when you click Start and allow access, and the audio and video never leave your device. Scores for the click, spacebar and reaction tests are saved only in your own browser.

If your camera or microphone is blocked

  1. Click the camera or lock icon in the address bar and allow access.
  2. Check your system privacy settings allow the browser to use the device.
  3. Close other apps (Zoom, Teams, OBS) that might be using it.
  4. Reload the page and try again.

More everyday tools

Typing speed test, stopwatch, online timer and user agent parser.

Frequently asked questions

Are my camera and microphone recorded?

No. Audio and video are processed live in your browser and never uploaded. The only recording is the optional 5-second mic playback, which stays on your device and disappears when you leave the page.

Why does my browser ask for permission?

Browsers require your permission before any site can use your camera or microphone. You can revoke it at any time from the icon in the address bar.

Do these tests work on phones?

Most do: mic, webcam, speaker, screen, reaction time and click tests work on phones and tablets. The keyboard, mouse and gamepad testers need those devices connected.