Device tests tools
Check your microphone, camera, keyboard, screen and sound.
- Microphone Test Test your microphone online in seconds: see a live level meter, choose between microphones, and play back a short recording to hear yourself.
- Webcam Test Check your webcam online with a live preview, camera selection, resolution and frame rate readout, and a snapshot you can download.
- Keyboard Tester Press every key and see it light up on a full keyboard layout to find dead or sticking keys, with key codes and rollover testing.
- Click Speed Test (CPS) Measure your clicks per second over 5, 10 or 30 seconds, and keep your best score. Also useful for checking a mouse for double clicking.
- Dead Pixel Test Fill your screen with pure red, green, blue, white and black to spot dead, stuck or hot pixels and backlight bleed on monitors and phones.
- Screen Resolution & Browser Info See your screen resolution, viewport size, device pixel ratio, colour depth, browser, operating system and language, all detected locally.
- Online Metronome A precise online metronome from 30 to 300 BPM with time signatures, an accented first beat, tap tempo and keyboard control.
- Online Guitar Tuner Tune a guitar, bass, ukulele or violin with your microphone. Shows the detected note and how many cents sharp or flat you are.
- Tone Generator (Frequency Generator) Play a pure sine, square, triangle or sawtooth tone at any frequency from 20 Hz to 20 kHz to test speakers, headphones and hearing range.
- Sound Level Meter (dB) Measure relative sound levels with your microphone, with a live meter, peak and average. Shows dBFS, which is not a calibrated SPL reading.