PDFPowerHub

Device Test

beta

This device test hub links every quick pre-call check in one place — microphone, webcam, speakers/headphones, keyboard, mouse and screen. Each test runs entirely in your browser; no media is uploaded or recorded.

Run through a quick check of your microphone, camera, speakers, keyboard, mouse and screen before a call or after buying a device. Each test runs entirely in your browser — nothing is uploaded or recorded.

Microphone testWaveform, level meter and a 3-second record + playbackWebcam testLive preview, framing, mirror and resolution readoutSpeaker / headphone testLeft/right channel check, reference tones and a sweepKeyboard testFind a dead or stuck key on a visual layoutMouse / click testButtons, scroll and double-click drift detectionDead pixel / screen testFullscreen solid-colour cycler for dead pixels

How to use Device Test

  1. 1 Pick the device you want to test from the list.
  2. 2 Run the mic, webcam or speaker test before a video call.
  3. 3 Use the keyboard, mouse or screen test after buying or when troubleshooting hardware.
  4. 4 Grant camera/microphone permission when the browser asks — access stays on your device.

Frequently asked questions

Is anything uploaded or recorded?

No. Every test runs locally in your browser — camera and microphone streams stay on your device and are never uploaded or stored.

What can I test here?

Your microphone, webcam, speakers/headphones, keyboard, mouse and screen (dead pixels) — the common pre-call and post-purchase checks.

Why does it ask for camera or microphone permission?

The mic and webcam tests need access to those devices. The browser asks the first time; you can allow or block it per site.

Does it work offline?

Yes. As a PWA the tests keep working with no connection once loaded.

Related Testers tools

Microphone Test Test your mic with a live waveform, meter and playback Webcam Test Check your webcam picture, framing and resolution Speaker Test Test speakers/headphones — L/R channels, tones & sweep Keyboard Test Find a dead or stuck key on a visual keyboard layout Mouse Test Test mouse buttons, scroll & double-click drift Dead Pixel Test Fullscreen colour cycler to spot dead or stuck pixels