DeviceKitFree private browser-based device diagnostics
About DeviceKit
DeviceKit is a privacy-first collection of browser-based diagnostic tools for checking screens, monitors, keyboards, mice, webcams, microphones, speakers, touchscreens, and game controllers. It includes tests such as dead pixel checks, refresh rate measurement, keyboard and mouse testing, webcam and microphone checks, speaker tests, and controller diagnostics. All tests run locally in the browser with no downloads or signup required.