Free device testing and diagnostic tools. Test your speakers, microphone, webcam, and touchscreen. Check for dead pixels, measure internet speed, monitor noise levels, and test your hearing — all running directly in your browser with no software to install.
Play a low-frequency sound to eject water from your device speaker.
Test your left and right speakers with audio frequency sweeps.
Test your microphone and check audio input levels in real time.
Test your webcam and preview your camera feed in the browser.
Use your webcam as a mirror to check your appearance.
Detect dead or stuck pixels on your screen with full-screen color tests.
Test your touch screen by drawing lines and checking for dead zones.
Measure your download and upload speed with a browser-based speed test.
Measure ambient noise levels in decibels using your microphone.
Test your hearing range with frequency-based audio tests.