About

This site is a small, focused collection of free online tools for checking that your computer hardware works correctly. We built it because most "device test" pages online are either cluttered with pop-ups, slow to load, or quietly upload your data somewhere. We wanted something better.

What we offer

• Keyboard test — see every key light up as you press it, with multi-key (N-key rollover) detection and ghosting checks.
• Webcam test — preview your camera, check supported resolutions, and record a short clip with audio.
• Microphone test — see a live level meter and waveform, and record a short sample for playback.
• Screen test — full-screen patterns for dead pixels, backlight bleed, color accuracy, sharpness, and refresh rate.

Privacy by design

Every tool runs locally in your browser using standard web APIs (getUserMedia, MediaRecorder, the Web Audio API, and Canvas). Your keystrokes, camera feed, microphone audio, and screen contents never leave your device. See our Privacy Policy for the details.

How we stay free

The Site is supported by contextual advertising (Google AdSense). We keep ads limited and unobtrusive so the tools stay usable. We do not sell user data.

Get in touch

Found a bug, have a feature idea, or want to translate the Site into your language? See the Contact page.