TestHub360 is a collection of 8 free, browser-based device testing tools — mic test, keyboard test, webcam test, speaker test, mouse test, CPS test, dead pixel test, and screen recorder. What makes it different: → Zero data collection — everything runs client-side in your browser → No account, no signup, no email → Works offline once loaded → NKRO keyboard testing, mouse DPI tracking, CPS timer modes (1s–60s), fullscreen dead pixel cycling, and WebM screen recording with audio