Test your devices right in your browser

Quick, free checks for your microphone, webcam, keyboard and more — no downloads, no sign-up.🔒 Every test runs locally in your browser. Nothing is ever uploaded.

• 🎤Microphone Test

  Check that your microphone works: live level meter, waveform and playback.

• 📷Webcam Test

  Preview your camera, check resolution and frame rate.

• ⌨️Keyboard Tester

  Find stuck or dead keys on a visual keyboard.

• 🖥️Dead Pixel & Monitor Test

  Fullscreen colors and gradients to spot dead pixels and uniformity issues.

• ⏱️Screen Refresh Rate Test

  Measure the refresh rate (Hz) your display is actually running at.

• 👻Monitor Ghosting Test

  Moving blocks reveal ghosting, overdrive coronas and black smearing.

• 🔊Speaker & Headphone Test

  Left/right channels, stereo image and frequency sweep.

• 🖱️Mouse Tester

  Buttons, wheel, double-click misfires and polling rate.

• 🎮Gamepad & Controller Tester

  Every button, stick and trigger — and a stick-drift check.

• 🩺Full Device Checkup

  Test all your devices in one guided run — see system specs, get a savable report.