Device lab
Test every device around your computer.
Webcam, microphone, keyboard, mouse, controller, screen and connection. Each test opens in its own window, ends in a verdict, and says what to fix. Free, nothing installed, nothing uploaded.
Preparing for something
Run a whole set in one go.
Exam system checkBrowser and system · Webcam · Microphone · Speakers · Internet · Screen · Location · Browser settings8 checksVideo call testBrowser and system · Webcam · Microphone · Speakers · Internet · Browser settings6 checksStreaming setup testWebcam · Microphone · Internet · Screen · Refresh rate · Browser and system6 checksGaming setup testKeyboard · Mouse · Controller · Refresh rate · Dead pixels · Speakers6 checks
One device
Test one thing, right now.
- Webcam testSee yourself, and the numbers.
- Microphone testHear yourself, and the room.
- Speaker testLeft, then right.
- Internet speed testfor exams and video calls.
- Screen testfor online exams and calls.
- Keyboard testEvery key, and how many at once.
- Mouse testButtons, wheel, and bounced clicks.
- Controller testerButtons, sticks, and drift.
- Touch screen testDead zones and fingers at once.
- Dead pixel testSix colours, full screen.
- Refresh rate testThe Hz the screen is really at.
- Battery checkCharge, charging, time left.
- Device infoAnd everything else the browser knows.
Questions
The device lab, answered
- What can I test here?
- Webcam, microphone, speakers, internet speed, screen and screen sharing, location permission, browser settings, keyboard, mouse, controller, touch screen, dead pixels, refresh rate, battery, and a device info card. Each test runs in its own window and gives a verdict with what to fix.
- Is anything uploaded or stored?
- No. Every test reads the device on this page and stops. Camera and microphone data stay in the browser, the speed test sends random bytes to this site only, and nothing is kept unless you email yourself a result.
- Do I need to install anything?
- No. Everything runs in Chrome, Edge, Firefox or Safari. A few checks need a permission the browser asks for, one at a time, with a sentence saying why.
- How is this different from other hardware test sites?
- Each test ends in a verdict against real requirements, such as the upload speed an exam vendor or a streaming platform needs, and says what to do when it fails. It also says plainly what a browser cannot see, and it sits next to a real stress test of the computer itself.