Device Tests — Webcam, Microphone, Keyboard and Screen
Check that your webcam, microphone and keyboard work, find your screen resolution and refresh rate, and look for dead pixels. Nothing is recorded or uploaded.
- Webcam Test Check that your camera works and looks right before a meeting or interview.
- Microphone Test Make sure your microphone works and sounds clear before a call or recording.
- Keyboard Tester Find keys that do not work, stick or register the wrong character.
- What Is My Screen Resolution? Your screen resolution and other display details, read straight from your browser.
- Dead Pixel Test Check a new monitor, laptop or phone for faulty pixels.
- Reaction Time Test Click to start, wait for the box to turn from red to green, then click (or press Space) as fast as you can.
- PPI Calculator How sharp is a 27-inch 1440p monitor compared with 4K?
- Click Speed Test (CPS) Click as fast as you can within the time limit to measure your clicks per second (CPS).
- Refresh Rate Test The refresh rate test starts as soon as the page opens, so you can see whether your 144 Hz or 165 Hz monitor, or your high-refresh phone, is really running that fast.
- Gamepad Tester Connect a controller and press any button to see every button, trigger and stick live.
- Mouse Test Click and scroll in the test area to see whether every button and the wheel respond.
- White Screen Turn your whole screen into a soft light — pure white, warm white, cool white or any colour, with adjustable brightness.
- Tone Generator Drag the slider or type a frequency and your browser plays it instantly.
- Left Right Audio Test Put on your headphones or turn on your speakers.
- White Noise Generator When you cannot sleep, the room is noisy or you need to focus, a steady noise hides the sudden sounds that bother you.
- Decibel Meter How loud is the building work upstairs, the traffic outside or the neighbour’s air conditioner?
- Mouse Polling Rate Test A higher polling rate means your mouse reports its position more often.
- Touch Screen Test Part of the screen not responding, missed taps while gaming, or just replaced the screen?
- Phone Sensor Test Motion controls behaving oddly, a compass spinning in your map app or auto-rotate not working?
- Monitor Gradient and Banding Test On a good monitor a gradient from black to white changes smoothly and you can see detail in both shadows and highlights.
- Guitar Tuner Play one string near your phone or computer microphone and the tuner shows the note, how far it is from the target in cents, and whether to tighten or loosen the string.