Device tests & utilities
Test your microphone, camera or keyboard, practice typing, or measure your reaction time.
- No sign-up
- No watermark
- Files stay on your device
- 29 tools in one place
Photo: Dan Farrell / Unsplash
Most used
Most popular
- CPS testPopularPick a time limit and a mouse button, click as fast as you can, and see your clicks per second…
- MetronomePopularA precise metronome in your browser: 20–300 BPM, odd meters with groupings, per-beat accents…
- Mic testPopularCheck your microphone in seconds: watch the live waveform and level meter, switch the browser's…
- Typing speed testType straight into the text and get your words per minute (WPM), accuracy and consistency.
- Webcam testCheck your camera before a call: see the live image, find the highest resolution it really…
- White noisePlay steady white, pink or brown noise right in your browser to mask distracting sounds while…
All other tools
23 more tools, A to Z.
- Aim trainerClick targets as fast and as accurately as you can.
- Camera troubleshooterOne click checks your browser, permissions and cameras, spots a black, frozen or too-dark…
- Color blind testRead the hidden numbers in eight dotted plates to screen for red-green color blindness.
- Controller testConnect a game controller and press any button: check every button and trigger, measure stick…
- Dead pixel testFill your screen with solid colors, gradients and a checkerboard and look for dots that don't…
- Decibel meterMeasure how loud it is around you with your device's microphone.
- Headphone testCheck that your headphones or speakers are wired correctly: left and right channels, center…
- Hearing testA quick, informal hearing check with headphones: find the quietest tone each ear hears at seven…
- Internet speed testCheck your download and upload speed, ping and jitter in about half a minute, see what your…
- Keyboard testPress every key and watch it light up on a US, UK, German or Hungarian layout.
- Memory testThree quick games check your short-term memory: remember longer and longer numbers, repeat a…
- Mic troubleshooterOne click checks your browser, permissions, devices and signal, shows where it fails, and gives…
- MIDI keyboard testConnect a MIDI keyboard or controller and see every key press, velocity value, pedal, knob and…
- Mouse testCheck every mouse button, the scroll and tilt wheel, the polling rate and your real DPI in one…
- Online mirrorTurn your laptop or phone camera into a mirror in one click.
- Online notepadA simple notepad in your browser: start typing and your notes save automatically on this device.
- Online rulerMeasure small objects right on your screen in inches or centimeters.
- Reaction time testReact the moment the screen turns green, or the moment you hear a beep.
- Refresh rate testFind out what refresh rate your display is really running at, then see the difference for…
- Spacebar counterHit the space bar as fast as you can against the clock, or count freely with no limit.
- Tally counterCount people, laps, items or anything else with a big tap button or your keyboard.
- Typing practiceLearn to type without looking at the keyboard.
- White screenTurn your screen into a plain, bright white light or any other solid color, in full screen with…
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- CM to inchesType a length in centimeters to get inches as a decimal, as a fraction you can find on a tape…
- KG to lbsConvert kilograms to pounds for body weight, luggage, gym plates or shipping.
- MM to inchesConvert millimeters to inches as a decimal and as the nearest fraction, handy for drill bits…
- Merge PDFCombine several PDFs and images into a single PDF.
- JPG to PDFPut one or many images into a single PDF.
- PDF to JPGSave each PDF page as a JPG image.
- Reverse image searchFind where an image comes from, spot fake profiles and locate higher-resolution copies.
- Meme generatorMake a meme from any picture: add bold top and bottom text with the classic outline, adjust the…