Hardware Test Tools

Free online keyboard shortcut and N-Key Rollover (NKRO) tester. Check anti-ghosting, test multi-key combos, and find your keyboard's rollover limit.

Free online webcam test. Check your camera resolution, frame rate, and lighting instantly in your browser. No upload, no software required.

Free online device checker. List all connected webcams, microphones, and audio outputs recognized by your browser — no software download needed.

Free online keyboard tester. Press any key and watch it light up on a virtual keyboard layout. Test mechanical, laptop, or membrane keyboards — no download.

Free online ping test and reaction time test. Measure your internet latency in ms and test your human reflex speed — no download, runs in browser.

Free online mic test. Check if your microphone is working with a live audio level meter and recording playback. Private, no upload, no signup.

Free online speaker test. Verify left and right audio channels on headphones or speakers with a simple stereo tone test. No download required.

Free online stuck key and key chatter tester. Detect double typing, switch bouncing, and physically stuck keys on mechanical keyboards instantly.