Device Tests
Test your webcam, mic, keyboard, controller and screen.
Dead Pixel Test
Check a new or used screen for dead pixels, stuck pixels and backlight bleed with full-screen colours, patterns and a custom colour. Free, no signup.
Gamepad Tester
Test controller buttons, triggers, stick drift and vibration online, with a drift check, stick circularity and a controller diagram. Free, no signup.
Keyboard Tester
Test every key on your keyboard online. See each key light up, check rollover and ghosting, and catch chattering keys. US, UK, laptop and Mac layouts.
Mic Test
Test your microphone in seconds: live level and waveform, hear yourself, record and play back, and fixes for Zoom, Teams and Discord. Free, no signup.
Mouse Test
Test every mouse button and the scroll wheel, catch double-click faults and estimate polling rate in your browser. Free, no signup.
Refresh Rate Test
Check your monitor or phone refresh rate in Hz to two decimals, see frame times and slow frames, and compare 30, 60 fps and full-rate motion. Free.
Speaker Test
Test speakers and headphones online: left and right (with a hands-free loop), sweep, bass, polarity and 5.1/7.1 surround, plus no-sound fixes. Free.
Touchscreen Test
Find touchscreen dead zones, ghost touches and multi-touch limits on a phone, tablet or laptop, with a map of missed spots. Free, no signup.
Webcam Test
Test your webcam in seconds: live video, resolution, frame rate and a lighting check, with fixes for blocked cameras. Free, no signup, nothing uploaded.