Device Tests

These tools check both your hardware and your own responses, using nothing but the browser. You can test a webcam, microphone, and speakers before a video call and take an ID photo, look for dead pixels on a display, verify keyboard rollover, measure click speed and reaction time, run colour vision and mosquito-tone hearing tests, and record your screen. Video and audio are processed entirely inside your browser.

Webcam Test (Free, Online)

A free tool to check your webcam feed, resolution, and aspect ratio right in your browser. Switch between multiple cameras and take snapshots — handy for checking your look before a video call or testing a built-in or ex...

ID Photo Maker with Your Webcam | Passport & Visa Sizes

Take one webcam shot and get passport, visa, resume and licence photos in every size at once. Face alignment guide, background colour replacement and a print sheet you can run off at a photo kiosk for pennies. Nothing is...

Microphone Test (Free, Online)

A free tool to check your microphone input level in real time, right in your browser. Switch between multiple microphones and record playback — handy for checking your audio before a video call or testing a built-in or e...

Speaker & Headphone Test (Free, Online)

A free tool to test the left/right channels and volume balance of your speakers or headphones, right in your browser. Frequency presets help you spot missing tweeter or woofer bands — handy right after a purchase or when...

Dead Pixel Test (ドット抜けチェック) — Free Fullscreen Screen Check

Free dead pixel test to check your monitor for stuck, dead, or discolored pixels. Displays solid black, white, red, green, and blue fullscreen panels so you can spot any dot that looks different from its surroundings. No...

Keyboard Tester | Check Every Key, Ghosting & N-Key Rollover (NKRO)

Free online keyboard tester. Press any key on your keyboard and watch it light up on the on-screen diagram in real time, so you can spot dead keys and check ghosting / N-key rollover (NKRO). Switch between ANSI (US) and...

Click Speed Test (CPS Test)

Free online CPS (Clicks Per Second) test. Choose a duration of 1, 5, 10, or 60 seconds, click as fast as you can, and track your personal best click speed right in your browser.

Reaction Time Test — Measure Your Reflexes in Milliseconds

Free reaction time test. Click the moment the box turns green and see your reflexes in milliseconds, with the best, median and consistency across five trials. Three modes: visual, Go/No-Go and audio. No sign-up; records...

Color Blind Test — Free Online Color Vision Check

Take a free online color blind test. Read the hidden numbers in 8 procedurally generated color plates to screen for red-green and blue-yellow color vision traits. This is a quick self-screening tool, not a medical diagno...

Hearing Test Online — Check Your High-Frequency Hearing Range

Take a free online hearing test to see how high a frequency you can hear, from a 1kHz calibration tone up to 20kHz. Headphones are recommended. This is a self-check tool, not a medical device.

Screen Recorder (Free, In-Browser)

Record your screen for free, right in your browser. No install and no upload required — your recording never leaves your device. Capture your screen, window, or tab together with microphone or tab audio, then download th...