Private browser-based device checks

Test Your Devices. Instantly.

Check your keyboard, mouse, screen, microphone, webcam, speakers and more — directly in your browser.

Start Testing Browse all tests

No download · No account · Permission only when you start

01 / Tests

Choose a device to test

Focused checks with honest browser limitations and clear next steps.

Press physical keys and inspect code, label, modifiers, repeat events, and simultaneous input.

Check buttons, wheel directions, drag, hold, coordinates, movement trail, and browser event rate.

Screen & Monitor Test

Inspect solid colors, gradients, uniformity, backlight bleed, motion, resolution, and estimated refresh rate.

Microphone Test

View a live waveform, volume meter, spectrum, device settings, and a local record-and-playback sample.

Preview a selected camera, inspect stream settings, switch facing mode, mirror, fullscreen, and save a local snapshot.

Speaker & Headphone Test

Play left, center, and right channel cues plus low-volume selectable frequency tones.

Gamepad & Controller Test

Inspect connected controllers, buttons, triggers, sticks, axes, deadzone, and optional vibration.

Printer Test Page

Printer Test Page: Text clarity, Thin lines, Grayscale, Color samples. Print at 100% scale with headers and footers disabled. Inspect the physical page for gaps, uneven density and misalignment.

Local by design

Your device data stays on your device.

No downloads or accounts. Camera and microphone streams are processed in your browser and are never uploaded.