Device Tests

PPI / DPI Calculator Find the pixel density, dot pitch and sharpness class of any screen from its resolution and diagonal — in your browser. Microphone Test Check your microphone with a live level meter in your browser — nothing is recorded. Headphone & Stereo Test Test left and right channels, balance and frequency response with tones generated in your browser. Webcam Test Preview your camera, see its real resolution and frame rate and take a photo — all in your browser. Reaction Time Test Measure your reaction time in milliseconds over five attempts and compare it to human averages. Typing Speed Test Measure your typing speed in words per minute (WPM) and accuracy — with texts in Portuguese, English and Spanish. What Is My IP See your public IP address and approximate location — city, state, country — detected from the connection, with nothing to install. Internet Speed Test Measure your download speed, upload speed and latency by transferring data to and from this server — nothing to install. My Browser Info See your browser, operating system, screen resolution, language and other details your device reveals to every website you visit. My HTTP Headers See every HTTP header your browser sends with each request — user agent, accepted languages, encoding, cookies and more. Tone Generator Generate a pure tone at any frequency from 20 Hz to 20 kHz — sine, square, triangle or sawtooth. Decibel Meter Measure the ambient sound level in decibels using your device microphone — no app needed. My Coordinates See your current geographic coordinates using your device's GPS — latitude, longitude and accuracy. Digital Compass Turn your phone into a compass — see the magnetic heading in degrees and the cardinal direction in real time. Keyboard Tester Press any key to see its name, code and keyCode — test every key on your keyboard. Dead Pixel Test Fill the screen with a solid color to find dead or stuck pixels on your monitor. Monitor Info See your screen resolution, color depth, pixel ratio and physical pixel count. My Screen Resolution See your current viewport and screen resolution — updates live as you resize the window. Mouse & Trackpad Tester Test your mouse buttons, scroll wheel and cursor position — all in the browser. Digital Bubble Level Use your phone's accelerometer as a digital level — see the angle and a bubble indicator. Screen Color Test Fill the screen with a single color — white, black, red, green, blue or any custom color.