All Tools

Microphone test Waveform, dB meter, score Webcam test Resolution, FPS, lighting Speaker test Channels and sweep Keyboard test Rollover and chatter Mouse test Buttons and polling Controller test Drift and deadzone Display test Dead pixels, refresh rate Meeting check Full call readiness Speed test Download, upload, ping Decibel Meter Measure sound level with your microphone. The reading stays in this tab. Voice Recorder Record audio in the browser and download the file to this device. Online Tuner Tune a guitar, bass, or ukulele from the microphone. Tone Generator Play a sine, square, triangle, or saw wave at any frequency. Metronome Keep time from 30 to 240 BPM, with tap tempo and an accent. Headphone Test Check left, right, and both channels, then take a short side quiz. Bass Test Play low frequencies from 20 Hz to 125 Hz and sweep the range. Webcam Mirror Preview the camera with mirror, brightness, contrast, and zoom. Webcam Recorder Record the camera, with optional microphone audio, and download the clip. Click Speed Test Count clicks per second over 1, 5, 10, or 30 seconds. Mouse DPI Test Estimate mouse DPI by moving a known distance. Dead Pixel Test Fill the screen with solid colors to find stuck and dead pixels. Refresh Rate Test Measure the frame rate the browser is painting, in hertz. Ghosting Test Move bars across the screen to compare motion blur and trails. Screen Info Show resolution, pixel ratio, browser, and device details. Color Test Check grayscale steps, gradients, and a simple gamma match. Ping Test Measure latency, jitter, and lost requests to this site. Typing Speed Test Measure words per minute and accuracy on a timed passage. Reaction Time Test Measure how fast you respond, in milliseconds. Aim Trainer Click targets and see your average time and accuracy. Number Memory Remember a number that grows by one digit each level. Visual Memory Remember which squares lit up, then click them back. Touch Test Draw with one or more fingers and look for dead zones. Vibration Test Play short patterns on the vibration motor. Sensor Test Read orientation, motion, and compass heading when the device has them.