d3vices

A-04getDisplayMedia

Screen share test

Test screen sharing before a meeting. Pick a screen, window or tab, confirm the browser can capture it, and read back the exact resolution and frame rate that would be sent.

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Permissions

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

Nearby instruments

A-01

Microphone test

Check that your mic is heard, see a live waveform, watch the input level and record a short clip to play back.

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.

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.