Device Tests
Mic test, webcam test, keyboard tester, CPS test, typing speed test and a free screen recorder – right in your browser, nothing is uploaded, no sign-up.
A mic test with live level meter and playback, a webcam test showing your camera’s real resolution, a keyboard tester, CPS test, typing test, a free screen recorder and a blank screen for dead pixel checks – no install. Video, sound and keystrokes stay in your browser.
29 tools
Most used
- Typing test: how fast do you type?Free typing test: measure your typing speed in 30 s, 1 or 3 minutes. Net and gross WPM, characters per minute, accuracy and errors. Works on mobile.
- White ScreenWhite screen in full screen: one click for a screen light, video call light or tracing. Also black, red, green, blue or any colour, with dimmer and sleep timer.
- Online Screen RecorderScreen recorder in your browser: record screen, window or tab with mic and system audio, save as MP4 or WebM. No watermark, no time limit, nothing is uploaded.
- CPS Test: How Many Clicks Per Second Can You Do?CPS test: click as fast as you can for 1, 5, 10, 30, 60 or 100 seconds and get your clicks per second, a speed chart and best scores. Mouse, touchpad or touch.
- Mic test: check your microphoneFree online mic test: live level in dBFS, noise floor, too quiet or clipping hints and a playback recording. Runs in your browser, nothing is uploaded.
- Online voice recorderFree online voice recorder: record with pause and level meter, trim the start and end, download as WAV, WebM or M4A. Nothing is uploaded, no sign-up.
- Typing lessons: learn touch typingFree typing lessons: 11 step-by-step touch typing lessons from the home row to numbers and symbols, a color-coded keyboard, speed and accuracy. No sign-up.
- Gamepad testerFree online gamepad tester: check buttons, triggers and sticks live, measure stick drift with a circle test and try vibration. Xbox, PlayStation and Switch.
All tools
- Webcam test: check your cameraFree webcam test in your browser: live picture, real resolution, megapixels and frame rate, try every level up to 4K, brightness check, photo. No upload.
- Speaker testFree online speaker test: check left and right stereo channels, run a 20 Hz–20 kHz frequency sweep, play single tones and a phase test. Runs in your browser.
- Keyboard test: do all your keys work?Online keyboard tester: every key lights up and stays marked. Find dead keys, ghosting, rollover limits and key chatter – ANSI, ISO, laptop and Mac views. Free.
- RAID CalculatorRAID calculator for RAID 0, 1, 5, 6, 10 and JBOD: usable capacity in TB and TiB, space efficiency and how many drives may fail, all levels compared.
- Online decibel meterMeasure sound level in your browser: level in dBFS, a rough dB(A) estimate, min, max and Leq, plus calibration against a real meter. No app, no recording.
- Dead Pixel TestFree full-screen dead pixel test: step through black, white, red, green, blue and more to find dead or stuck pixels on any monitor, laptop or phone.
- Mouse test: check buttons, double click and scroll wheelOnline mouse tester: checks left, right and middle buttons, side buttons 4 and 5, scroll wheel and double clicks – and warns if a button double-fires.
- Hz test: how many frames per second does your screen show?Online Hz test: measures the refresh rate of your monitor or phone (60, 120, 144 Hz …) in the browser and shows a motion test with several frame rates.
- Online ruler in actual sizeOnline ruler for your phone or screen: calibrate once with a bank card, then measure in cm, mm or inches at real size. Free, no app and no sign-up.
- Spirit level for your phoneOnline spirit level: place your phone on a surface or hold it against an edge and read the tilt in degrees and percent. With zero calibration, no app needed.
- Touch screen test: check multi-touch and dead zonesTest your touch screen online: shows every simultaneous touch point, draws your swipes into a grid and reveals dead zones. With fullscreen mode.
- Classroom noise meter traffic lightNoise traffic light in your browser: the microphone measures loudness and the light turns green, yellow or red. Adjustable thresholds, full screen. Free.
- GPS speedometer in your browserOnline GPS speedometer: measures your speed by GPS in km/h, mph or knots, with top and average speed and distance. Nothing is stored or sent.
- Online compass for your phoneFree online compass, no app needed: shows your direction using your phone’s orientation sensor, magnetic or true north with declination. Nothing is sent.
- Download Time CalculatorDownload time calculator: duration from file size and bandwidth in hours, minutes and seconds, with real-world efficiency and a table for other connections.
- Online protractorOnline protractor: measure an angle on your screen with three points, or get your phone’s tilt angle from its sensor, in degrees and percent. No app needed.
- Show my GPS coordinatesFind your GPS coordinates: shows your location in decimal degrees, degrees/minutes/seconds, decimal minutes and UTM, ready to copy – or convert coordinates.
- LED scrolling text in fullscreenOnline LED scroller: run your own text across the screen as an LED banner, with color, speed and size, in fullscreen on your phone – like a sign at a concert.
- Altimeter: how high am I?Online altimeter: shows your phone’s GPS altitude with accuracy, average, minimum and maximum, in metres or feet, with a note on ellipsoid vs. sea level.
- eDPI calculatoreDPI calculator for gamers: multiply mouse DPI by in-game sensitivity, see the cm and inches per 360° turn and the sensitivity that keeps your aim at a new DPI.
- Online mirror with your cameraMirror online: use your phone or laptop camera as a mirror, flipped like a real mirror, with a bright light frame, zoom and snapshot. No app needed.