d3vices

A-01getUserMedia · AudioContext · MediaRecorder

Microphone test

Test your microphone in the browser. See a live waveform and volume meter, pick between input devices, and record a few seconds to hear exactly what the other side hears.

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Permissions

microphone — requested only when you press start, and revocable at any time in your browser settings. Nothing captured is uploaded or stored.

Nearby instruments

A-02

Speaker test

Play a tone through the left and right channel independently, sweep the audible range and check for a blown driver.

A-03

Camera test

See your webcam live, read the resolution and frame rate it actually delivers, and switch between cameras.

A-04

Screen share test

Confirm screen sharing works before a call, and see the resolution and frame rate the capture actually produces.

B-01

Display & dead pixel test

Full-screen solid colours, gradients and grids to find dead pixels, backlight bleed and colour banding.

B-02

Screen information

Resolution, device pixel ratio, colour depth, colour gamut, refresh rate, orientation and safe-area insets.

C-01

Keyboard test

Press every key and watch it light up. ANSI, ISO and JIS layouts, with rollover and ghosting detection.