Device and browser tests

Test your webcam, microphone, keyboard, screen and more.

• Battery Status Checker Check your laptop or phone battery level, charging state, time remaining and real drain rate in %/hour, measured live in your browser.
• Bluetooth Device Inspector Test a Bluetooth Low Energy device in your browser. List its GATT services and characteristics, read values such as battery level and watch live notifications.
• Browser Info See your browser name and version, operating system, user agent, Client Hints, language, time zone and supported web features, all read locally.
• Dead Pixel Test Free online dead pixel test that fills your screen with solid colours to find dead, stuck or hot pixels, with an optional low-rate stuck pixel fixer.
• Gamepad Tester Free online gamepad tester for Xbox, PlayStation and USB controllers. See every button, trigger and stick live, check stick drift and test vibration.
• GPU Benchmark (WebGL) Free WebGL GPU benchmark in your browser. Stress-test your graphics card with a raymarching shader, draw calls and triangles, and get a score per stage.
• Keyboard Tester Free online keyboard tester that lights up each key you press, shows key, code and location values, counts N-key rollover and detects stuck keys.
• Microphone Test Free online mic test with a live level meter in dBFS, device picker and a 5 or 10 second record and play back. Nothing is uploaded.
• Mouse Test and Click Speed Test Free online mouse test that checks all five buttons, double-clicks and the scroll wheel, and measures your clicks per second over 1, 5 or 10 seconds.
• Refresh Rate Test Free refresh rate test that measures your display's Hz from browser frame timing, shows jitter and skipped frames, and moves an object to check motion.
• Screen Color and Uniformity Test Free full-screen uniformity test with grey levels, pure colours, gradients and fine grey steps to check backlight bleed, IPS glow, tint shifts and banding.
• Screen Recorder Free online screen recorder. Capture a screen, window or tab with system audio and your microphone, pause and resume, then download WebM or MP4. No upload.
• Screen Resolution Checker Check your screen resolution, viewport size, device pixel ratio, physical pixels, colour depth and orientation instantly, with live updates as you resize.
• Serial Port Monitor Free online serial monitor for Arduino, ESP32 and USB-serial adapters. Pick the baud rate, read data live in text or hex, send commands and save the log.
• Speaker Test Free online speaker test to check left and right stereo channels and run a 20 Hz to 20 kHz frequency sweep on speakers or headphones.
• Touch Screen Test Free online touch screen test. Count multi-touch points, draw trails to find dead zones, check grid coverage, pressure and contact size, in full screen.
• Voice Recorder Free online voice recorder with a level meter, pause and several takes. Play, rename and download each take as WebM, OGG, WAV or MP3. Nothing is uploaded.
• Webcam Photo Booth Free online webcam photo booth. Take photos with filters, a countdown timer and a 4-shot photo strip, then download PNG or JPEG. Photos never leave your device.
• Webcam Test Free online webcam test that checks your camera works and shows its real resolution, frame rate and aspect ratio. Take a snapshot. Nothing is uploaded.