Does your gear work? Find out in 60 seconds.

Test your microphone, camera, speakers and connection before the call — and if something fails, get the fix, not a shrug.

  • Runs in your browser
  • Nothing uploaded
  • No sign-up
  • Tells you how to fix it

Checks your microphone, camera, speakers and connection, one after another. Your browser will ask for permission.

1
MicrophoneSay something when the meter appears.
2
CameraLive preview, resolution, frame rate, lighting.
3
Speakers / headphonesYou’ll hear a tone left, then right — tap the side you heard.
4
ConnectionRound-trip time and jitter to the edge network.

Everything runs on this device. Nothing is recorded or uploaded; the connection check only measures the time to reach this site’s edge network.

All tests

Before a call

Microphone, camera, speakers and headphones — the things that fail right before a meeting, interview or exam.

Mic testLevel meter, waveform, playbackWebcam testPreview, resolution, FPS, lightingSpeaker testLeft / right · sweep · bassHeadphone testLeft / right · balance · sweep

Keyboard, mouse, controller, touch

Every key, button, stick and finger, with the numbers that tell wear from settings.

Keyboard testEvery key, rollover, stuck keysMouse testButtons, scroll, double-click, HzGamepad testButtons, sticks, drift %, vibrationTouch screen testDead zones, multi-touch, ghost touch

Screen

Dead pixels, pure colours, real refresh rate and everything your browser knows about your display.

Dead pixel testFull-screen colours, stuck pixelsWhite screenWhite, black and colour screensRefresh rate testReal Hz, judder checkScreen resolutionResolution, DPR, HDR, gamut, ruler

When something fails

A test that fails tells you why — permission blocked, no device found, device busy — and links to the fix for your app and system. The most-read guides:

Mic not working in ZoomNobody can hear you, or Zoom says “Unable to detect your microphone”Mic not working in TeamsFor the new Teams app and Teams in a browser, on Windows and Mac.Mic not working in DiscordDesktop app, browser and mobileMic not working in Google MeetMeet is a web app: the browser’s permission and the OS privacy switch for the browser are what matter.Mic not working on Windows 11Laptop array, USB mic, headset or Bluetooth — the same order of checks finds the fault.Mic not working on MacMacBook internal mic, USB or Bluetooth headset, external interface.

All fix guides →

Why this exists

Microphones, cameras and speakers fail at the worst moment: a minute before an interview, a lecture or a proctored exam. Most of the time nothing is broken — the wrong device is selected, an operating-system switch is off, or another app is holding the hardware. These tests use the same browser interfaces your call app uses, so a pass here means the hardware and the system are fine and only the app’s settings remain. The guides go straight to those settings, in the order that finds the fault fastest.

Questions, answered

Is anything recorded?

No. Audio and video are analysed in your browser and discarded. The report is text you can copy; it never leaves your device unless you share it.

Why does the browser ask for permission?

Browsers require your consent before any page can use the microphone or camera. Choose Allow; the test cannot run without it.

Will a pass here guarantee my meeting works?

It proves the hardware, the operating system and the browser can use the devices. Your meeting app must still have permission and the right device selected — the guides show where.