Timer, stopwatch, and other utility tools
Online stopwatch, countdown timer, pomodoro timer, and interval timer with lap recording, alarm sounds, and fullscreen mode
39 tests: dead pixels, backlight bleeding, color banding, patterns, motion blur & response time
Test controller buttons, analog sticks, triggers, D-pad, and vibration with drift detection
Test camera resolution, FPS, and microphone with real-time preview and snapshot features
Test microphone with real-time audio visualizer, volume meter, and recording playback
Test all keyboard keys and mouse buttons with real-time visualization and event logging
Scan BLE devices, monitor RSSI signal strength, and explore GATT services in your browser
View USB HID device info including VID, PID, HID collections and report descriptors using WebHID API
Test accelerometer, gyroscope, and orientation sensors on your mobile device with real-time 3D visualization